EP4021834B1 - Feeder of a sheet-processing machine and method for sensing and/or correcting positionally and/or dimensionally divergent sheets in a feeder of a sheet-processing machine - Google Patents

Feeder of a sheet-processing machine and method for sensing and/or correcting positionally and/or dimensionally divergent sheets in a feeder of a sheet-processing machine Download PDF

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Publication number
EP4021834B1
EP4021834B1 EP21729234.1A EP21729234A EP4021834B1 EP 4021834 B1 EP4021834 B1 EP 4021834B1 EP 21729234 A EP21729234 A EP 21729234A EP 4021834 B1 EP4021834 B1 EP 4021834B1
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EP
European Patent Office
Prior art keywords
stack
transport direction
sheets
distance
sensors
Prior art date
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Active
Application number
EP21729234.1A
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German (de)
French (fr)
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EP4021834A1 (en
Inventor
Bernd Hanke
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.)
Koenig and Bauer AG
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Koenig and Bauer AG
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Publication of EP4021834A1 publication Critical patent/EP4021834A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/08Separating articles from piles using pneumatic force
    • B65H3/0808Suction grippers
    • B65H3/0816Suction grippers separating from the top of pile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00Supports or magazines for piles from which articles are to be separated
    • B65H1/04Supports or magazines for piles from which articles are to be separated adapted to support articles substantially horizontally, e.g. for separation from top of pile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00Supports or magazines for piles from which articles are to be separated
    • B65H1/08Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
    • B65H1/14Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising positively-acting mechanical devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/08Separating articles from piles using pneumatic force
    • B65H3/0808Suction grippers
    • B65H3/0816Suction grippers separating from the top of pile
    • B65H3/0825Suction grippers separating from the top of pile and acting on the rear part of the articles relatively to the final separating direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/08Separating articles from piles using pneumatic force
    • B65H3/0808Suction grippers
    • B65H3/0883Construction of suction grippers or their holding devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02Controlling 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02Controlling 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
    • B65H7/06Controlling 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02Controlling 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
    • B65H7/06Controlling 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
    • B65H7/08Controlling 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/20Controlling associated apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/103Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20Location in space
    • B65H2511/22Distance
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20Location in space
    • B65H2511/24Irregularities, e.g. in orientation or skewness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50Occurence
    • B65H2511/52Defective operating conditions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30Forces; Stresses
    • B65H2515/34Pressure, e.g. fluid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00Sensing or detecting means
    • B65H2553/40Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/45Scanning means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00Sensing or detecting means
    • B65H2553/80Arangement of the sensing means
    • B65H2553/82Arangement of the sensing means with regard to the direction of transport of the handled material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/11Dimensional aspect of article or web
    • B65H2701/113Size
    • B65H2701/1131Size of sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00Application field
    • B65H2801/03Image reproduction devices
    • B65H2801/21Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a feeder of a sheet processing machine and a method for detecting and/or correcting sheets that differ in position and/or dimensions in a feeder of a sheet processing machine according to the preamble of claim 1 or 10.
  • a device for aligning sheets in which a control device is provided on the feed table that detects the actual position of the sheet leading edge of the foremost sheet conveyed on the feed table by conveying means, and any necessary correction of the sheet is effected on the feed table by two conveyor belts driven independently of one another.
  • the DE 10 2004 005 575 A1 relates to the determination of a level at which a top sheet of a stack, ie the position of the top edge of the stack, is located. This is achieved in that an optical sensor directed from above onto the front edges of the stack only measures when the front stop is switched off and the top layers of the stack are at rest after any trapped blown air has escaped.
  • the DE 101 51 484 A1 discloses a sheet feeder for cyclically conveying sheets by suction cups, the position of a front edge of the sheet to be taken up or taken up being detected by means of optical sensors which are carried along by the suction cups and are directed at the front sheet edge from above or below. If there is a deviation from the course perpendicular to the direction of transport, the suction cups move ahead or behind on one side.
  • the DE 11 2007 001 617 T5 relates to setting a working pressure applied to an ejector of a suction cup operated at high pressure to a working pressure adapted to the corresponding sheet and/or the operation of the printing press by comparing a measured and predetermined working pressure.
  • the working pressure is carried out on a negative pressure or positive pressure delivered by the ejector.
  • the DE 103 56 107 A1 discloses the preamble of claims 1 and 10 and relates to a sheet feeder with leading edge separation and contact-free stack scanning, with a sensor device on at least one of the suction cups receiving the topmost sheet being able to be directed to the stack top of the sheet stack in contact-free detection of the height of the stack top of the sheet stack relative to the suction cup.
  • U.S. 5,037,080 is a device for sheet length query disclosed, which includes provided in the feeder suction cups with a query hole on the Rear edge of the top sheet are directed.
  • the DE 101 00 191 A1 relates to a sheet feeder, which is assigned a distance-detecting sensor to determine the format of the stacked sheets and to detect the position of the stack with respect to a machine center to both of the stack and to the rear. After detecting the position of the stack in relation to the center of the machine, the working elements of the machine are set accordingly and the sensors on one of the sides and on the back of the stack are switched off.
  • the object of the invention is to provide an improved feeder of a sheet processing machine and a method for detecting and/or correcting sheets that differ in position and/or dimensions in a feeder of a sheet processing machine.
  • the achievable with the invention consist in particular that already early, i.e. not immediately upon entry into, for example, a system of the sheet processing machine, a deviation in the position and/or in the width or length - in particular in relation to the position in the plane spanned by the sheet Dimension to a target position or target dimension can be recognized and, if necessary, a correction or consideration is already possible when conveying into the transport path leading through the sheet processing machine.
  • the evaluation means evaluating the results of the at least one sensor, in particular two sensors are set up to record the course of the distances determined by the at least one sensor or two distance sensors and their courses during the tracking of the stack to be correlated and evaluated.
  • tendencies can already be derived that enable countermeasures to be taken at an early stage, e.g. B. even before a deviation goes beyond tolerable sizes.
  • a particularly advantageous further development with mathematical-statistical evaluation of the measurement results also enables predictive, automated positioning of the sheet separator or its tools for changed sheet lengths and/or positions.
  • the results can also be incorporated into the control of other aggregates provided on the transport path, e.g. B. in the phase position and / or speed of subsequent works and / or transport elements such.
  • a sensor system according to the invention with at least one, preferably two sensors scanning the stack profile on the front and/or on the back, in particular distance sensors, can be used to identify individual missing sheets at an early stage, ie sheets with
  • Two distance sensors that are spaced apart from one another transversely to the transport direction can be provided as sensors on the front or rear, or in a variant that is not shown in detail here, a laser scanner that scans and evaluates a distance to the stack at several points or continuously over an area of the stack width.
  • a feeder of a sheet processing machine in which a stack of sheets to be processed can be accommodated, at least two first handling tools are provided which are spaced apart from one another transversely to a transport direction of the sheets, through which a top sheet of a of the stack received in the feeder can be lifted from the stack and/or at least two second handling tools spaced apart from one another transversely to a transport direction of the sheets, through which an uppermost sheet lifted from the stack in the transport direction away from the stack into a downstream transport path - which in particular downstream into one or leads to several works for the treatment and/or processing of the sheets - can be transported.
  • the feeder comprises a sensor system and an evaluation means which is in signal communication with it, through which the sheet-processing machine to be fed sheets--e.g. B. still in the stack and/or in the course of separating and/or conveying away from the stack into the transport path - criteria characterizing the position and/or dimensions of the sheets can be monitored, evaluated for deviations from a target or target range and results of the Evaluation can be output via a signal connection for visualization to display means and/or for correction to control means.
  • the evaluation means, the display means and/or the control means can be arranged on the feeder or they can be physically separate, but connected to the sensor system arranged on the feeder and assigned to it via signal connections.
  • arcs to be fed into the processing machine - e.g. B. still in the stack and / or in the course of separating and / or conveying away from the stack into the transport path - by means of the sensors for a position and / or dimension of the sheet characterizing criteria, evaluated for deviations from a target or target range and results of the evaluation are visualized and/or used for an automated correction.
  • the sensor system comprises one or more sensors on the front side of the stack pointing in the transport direction of the sheets to be fed in, through which a distance or - in particular over time - the course of the distance or at least information about a distance or - in particular over time - the course of the distance at least two locations that are spaced apart from one another transversely to the transport direction can be determined on the front side of the stack pointing in the transport direction, and/or one or more sensors on the rear side of the stack pointing in the opposite direction to the transport direction, by means of which a distance or - in particular a time - distance profile or else at least information about a distance or - in particular temporal - distance course to at least two transverse to Transport direction mutually spaced points on the back of the stack can be determined.
  • the sensor system comprises two distance sensors, which are spaced apart from one another transversely to the transport direction, on the front side of the stack pointing in the transport direction of the sheets to be fed in, through which a distance is measured in each case from one of two locations spaced apart transversely to the transport direction (T).
  • the downstream side of the stack can be determined, and/or two distance sensors, which are spaced apart from one another transversely to the transport direction, on the opposite rear side of the stack, by means of which a distance or - in particular temporal - distance progression to each one is determined as a criterion characterizing a position and/or dimension of sheets can be mediated by the sea from two locations at a distance from one another transversely to the transport direction (T) of a location on the rear side of the stack.
  • T transport direction
  • the expression of the distance or information about such a distance should also include a measure that represents a distance and/or a measure that correlates with it.
  • At least one sensor in particular two distance sensors spaced apart from one another transversely to the transport direction, on the front and/or rear side of the stack pointing in the transport direction of the sheets to be fed in, a distance is determined from two points spaced apart transversely to the transport direction on the downstream and/or or upstream side of the stack.
  • the two first and/or second handling tools are designed as suction cups, with the sensor system being assigned to the first and/or second handling tools and acting as pressure sensors trained sensors, by means of which a pressure curve in the relevant handling tool or at a point of the line path associated with the handling tool can be determined as a criterion characterizing a position and/or dimension of sheets.
  • the sensors included in the sensor system and designed as pressure sensors determine a pressure curve in first and/or second handling tools designed as suction cups or at a point on the line path assigned to the handling tool in question as a criterion characterizing the position and/or dimension of sheets.
  • the above position is the position in a spanned by the sheet width and length, in the normal case given for the stack arrangement z. B. horizontal plane.
  • In 1 shows a detail of a sheet-processing machine preferably designed as a sheet-fed printing machine. In principle, however, you can also use another sheet-processing machine such as e.g. B. a punch, cutting, painting or other machine with the requirement of an input-side sheet separation can be formed.
  • a sheet-processing machine preferably designed as a sheet-fed printing machine.
  • you can also use another sheet-processing machine such as e.g. B. a punch, cutting, painting or other machine with the requirement of an input-side sheet separation can be formed.
  • the sheet-processing machine explained here using the example of a sheet-fed printing press comprises a feeder 01, e.g. B. pile or sheet feeder, a conveyor table 02, a sheet feeder 03 and, following the sheet feeder 03, one or more units 04, not shown here in detail, for treating and/or processing the sheets 06, as shown here, e.g. B. a printing unit 04, coating unit, drying unit, calendering unit or the like.
  • a feeder 01 e.g. B. pile or sheet feeder
  • a conveyor table 02 e.g. B. a sheet feeder 03 and, following the sheet feeder 03, one or more units 04, not shown here in detail, for treating and/or processing the sheets 06, as shown here, e.g. B. a printing unit 04, coating unit, drying unit, calendering unit or the like.
  • a stack 09 for example a stack of sheets 09, is placed on a stacking table 10 in feeder 01.
  • the stacking table 10 can be adjusted in height with the aid of a lifting device 11 in order to raise the top sheet 06 of the stack of sheets 09 to a fixed or only slightly variable height, regardless of the number of sheets 06 in the stack 09, so that it is suitable for transferring the sheets 06 to the belt table 02 keep.
  • a front stop 16 defines a vertical plane in which the front edges of the sheets 06 of the sheet stack 09 are positioned.
  • a curved flap 17 is fitted around a flap shaft 18 between the in 1 shown, which extends the front stop 16 in a straight line upwards, can be pivoted counterclockwise into a substantially approximately horizontal position, in which it supports the transport of the sheets 06 to the downstream belt table 02.
  • the feeder 01 comprises various tools 12, combined here in a sheet separator 14; 13 for dividing the stack 09 into individual sheets 06 and for transporting the sheets 06 away to the printing units 04 and possibly other units of the sheet-fed printing press.
  • these tools 12; 13 include, on the one hand, a plurality of so-called suction cups 12, in particular handling tools 12 embodied as separating or lifting suction cups 12, in particular lifting tools 12, which are arranged above a rear edge 05 of the stack 09 in the transport direction T of the sheets 06 and can be moved essentially in the vertical direction.
  • the separating suckers 12 each include one downward, towards the stack 09 open suction cups made of flexible plastic, which are connected at their upper end to a common vacuum source.
  • the negative pressure must be sufficient to allow the suction cups to adhere securely to the sheet 06 to be lifted from the stack 09, but it must not be so strong that it draws the sheet 06 into the suction cup and deforms it as a result.
  • each suction separator 12 can be movable relative to the sheet separator 14 with the aid of its own drive, in particular a linear actuator; a common frame in which all suction separators 12 are held is preferably movable relative to the sheet separator 14 with the aid of a fast, powerful main actuator , in order to suck the sheet 06 from the stack 09 and lift it along the rear edge 05, and to even out any unevenness on the upper side of the stack 09 and to ensure simultaneous contact of all suction separators 12 with the sheet 06 to be lifted, the suction separators 12 are relative with the aid of auxiliary actuators adjustable to the frame, the latter being able to be slower and have a smaller stroke than the main actuator.
  • a tool 15 designed as a feeler foot 15 can be provided, which is located between an in 1 shown, along the rear edge 05 on the stack 09 pressing holding position and a relative to the holding position raised and opposite to the transport direction T behind the rear edge 05 offset rest position.
  • the feeler foot 15 is placed in the holding position when the top sheet 06 of the stack 09 has been lifted by the suction separators 12 along the rear edge 05, in order to prevent the underlying sheets 06 of the stack 09 from being whirled up when one behind the rear edge 05 blowing device 19 arranged at the height of the top of the stack 09 blows air into an open gap 07 between the lifted sheet 06 and the rest of the stack 09.
  • the sheet separator 14 tools 13, z. B. suction cup 13, in particular designed as a transport suction cup 13, handling tools 13, in particular transport tools 13 are provided, which perform a predominantly vertical movement in or against the transport direction T.
  • the transport suckers 13 have flexible suction cups which, after the suction separators 12 have been raised, are subjected to a vacuum in order to pull the lifted sheet 06 towards them. At the same time, vacuum is no longer applied to suction separators 12, so that they release sheet 06.
  • blower device 19 lifts sheet 06 from stack 09 over its entire surface and forms an air cushion under sheet 06, on which sheet 06, driven by the horizontal movement of transport suckers 13, over which the the horizontal pivoted sheet flap 17 is pushed away onto the belt table 02.
  • Aforesaid sucker 12; 13 can alternatively also be designed as working according to the Bernoulli principle, in short as a so-called Bernoulli suction device.
  • the above applies accordingly with the difference that they are connected to an overpressure source and are or are operated with air that is under overpressure compared to the environment.
  • the belt table 02 downstream of the feeder 01 is designed as a suction belt table 02 in the exemplary embodiment. It preferably comprises two rollers 20; 21, for example a drive roller 20 and a deflection roller 21. Between the two rollers 20; 21 extends a one-part or multi-part table plate 22. The table plate 22 forms the multiple perforated upper side of a suction box 23.
  • the drive roller 20 and the deflection roller 21 are wrapped by at least one conveyor belt 24 which, like the table plate 22 over which it extends, is broken many times, so that it is not sucked firmly to the table plate 22, but a sheet 06 is sucked onto the conveyor belt 24.
  • the circumferential speed of the conveyor belt 24 is generally lower than the ratio of the edge length of the sheets 06 to the cycle time of the sheet separator 14, so that when the transport suckers 13 begin to push a new sheet 06 over the sheet flap 17, the previous sheet 06 has not yet completely pushed it happened.
  • a shingled flow of sheets 06 is thus formed on the conveyor belt 24, in which the number of sheets 06 overlapping one another is variable depending on the circulation speed, edge length and cycle time.
  • the sheet feeder 03 to which the sheets 06 are conveyed by the circulating conveyor belt 24, comprises a feed table 26 and, on a rear edge of the feed table 26 in the transport direction T, stops 27, which from their in 1 shown, blocking the conveying path of the sheets 06, can be lowered in order to clear the path for a sheet 06 resting against the stops 27 to the following printing unit 04, from which in 1 a transfer drum 29, an impression cylinder 30 and a blanket cylinder 31 are shown.
  • Transport of the sheets 06 via the sheet feeder 03 and one or more units 04 and one or more units can be subject to disruptions caused by errors in the position or dimensions of the transported sheets 06. These can already be caused when the sheets 06 are fed into the feeder 01, since the cut lengths of the sheets 06 in the stack 09 can vary or possibly be offset or crooked in the stack 09 (see e.g. 7 in exaggerated representation).
  • feeder 01 In order to determine deviations in the position and/or dimensions of the sheets 06 to be fed into the processing machine by feeder 01 from a target position or a target dimension, feeder 01 now includes a sensor system whose Output signals by means of evaluation means 32, which are only indicated schematically here; 32', in particular correspondingly configured data processing means 32; 32', can be evaluated or are evaluated for any deviations in position and/or dimensions (see e.g. 2 and 3 or 8 ).
  • the evaluation result can be displayed via an output interface, for example on a display means 34; 34' can be visualized.
  • the above position is the position in a spanned by the sheet width and length, and given for the stack arrangement normal case of a level stand z. B. horizontal plane.
  • the evaluation means 32; 32' control means 33; 33' e.g. B. data processing means 33; 33' with a control logic implemented in these, by means of which, depending on the evaluation result, a correction directed counter to the deviation can be brought about or is brought about, e.g. B. via a change in the position and / or location of handling tools 12; 13, in particular of the handling tools 12; 13 comprehensive sheet separator 14, for example by controlling one or more corresponding drive means via an associated drive control.
  • this takes place automatically via the assigned control means 33; 33'.
  • any sensor device can be provided, based on the output signal of which criteria characterizing the position and/or dimensions of the sheets 06 can be obtained and on the basis of which deviations in the position and/or dimensions of the sheets to be fed into the processing machine by feeder 01 06 can be determined for a target or target range and ideally quantified.
  • At least one downstream and/or at least one upstream sensor S5, S6; S7; S8 can be the sensors for at least part of the Sheet 06 receiving handling tools 12; 13, in particular the sucker 12; 13 associated therewith as pressure sensors S1; S2; S3; S4 trained sensors S1; S2; S3; S4, through which a pressure P(S1); P(S2) or pressure curve in the suction cup 12; 13 or at a point of the sucker 12; 13 associated line path can be determined.
  • a print P(S1); P(S2) or, in particular, the pressure profile, a criterion for the position and/or dimensions of sheets 06 is obtained.
  • This determinable pressure P(S1); P(S2) represents, during active operation, for suckers 12 connected to a vacuum source; 13 shows a pressure curve with a negative pressure, ie a curve with a pressure P(S1) lying below ambient; P(S2), in the case of suckers operating according to the Bernoulli principle 12; 13 shows a pressure profile with an overpressure, ie a profile with a pressure P(S1) above ambient; P(S2).
  • a load curve could also be used with the use of suckers 12; 13 by corresponding sensors S1; S2; S3; S4 in a different way, for example by mechanical force transducers or the like.
  • two separating suckers 12 spaced transversely to the transport direction T are each provided with a sensor S1; S2, in particular pressure sensor S1; Assigned to S2, in particular integrated into it, by means of which a load or pressure curve can be determined when sheets 06 are lifted.
  • two transport suckers 13 spaced transversely to the transport direction T are each provided with a sensor S3; S4, in particular pressure sensor S3; Assigned to S4, in particular integrated into it, through which a load profile, in particular pressure profile, can be determined during the transport of sheets 06 along the transport direction T.
  • the lifting tools 12 and the transport tools 13 is preferably two transversely spaced handling tools 12; 13, a sensor S1; S2; S3; S4 assigned, both of which are within a width of a smallest sheet format to be fed and/or which are furthest apart in the smallest sheet format to be fed.
  • a sensor S1; S2; S3; S4 assigned, both of which are within a width of a smallest sheet format to be fed and/or which are furthest apart in the smallest sheet format to be fed.
  • these are the respective outermost handling tools 12; 13, but arranged in such a way that they also cover the narrowest format.
  • the load or pressure profile on the individual handling tools 12; 13, in particular on two handling tools 12; 13 of the same type and/or in correlation with each other can basically be evaluated in any way and evaluated against a target.
  • a feature A(S1) that is characteristic of the level and/or course; A(S2); A(S1, S2) are extracted or formed, this as a target with a result for the feature A(S1) currently obtained during recording and transport; A(S2); A(S1, S2) are compared and the result of the comparison is evaluated for deviations.
  • the desired state can be determined by measuring a large number of sheets 06 that have been picked up and conveyed using statistical methods, e.g. B. as mean value M1; M2 with a confidence interval ⁇ that is or can be tolerated as a deviation, for example; ⁇ (S1); ⁇ (S2) is determined. It can be advantageous if this specific mean value M1; M2 is not static for further production, but can be defined via a large number of e.g. B. more than 50 most recently viewed events for feature A(S1); A(S2); A(S1, S2) as target with a confidence interval ⁇ ; y(S1); y(S2) is determined.
  • statistical methods e.g. B. as mean value M1; M2 with a confidence interval ⁇ that is or can be tolerated as a deviation, for example; ⁇ (S1); ⁇ (S2) is determined.
  • this specific mean value M1; M2 is not static for further production, but can be defined via a large number of e.
  • the feature A(S1); A(S2); A(S1, S2) is a measure of the pressure P(S1); P(S2) over the full or at least part of a pick-up and delivery cycle of the suction cups 12 in question; 13 for picking up and conveying a sheet 06, ie a movement cycle until the starting position is assumed, under the curve, ie between the curve and the abscissa, resulting in surface areas A(S1); A(S2) to apply.
  • a surface is above the abscissa in the case of overpressure and below it in the case of underpressure. This is e.g.
  • Am 4 as an example and schematically based on the vacuum applied over a movement cycle of the left and right lifting suction device 12 and the surfaces lying between the respective curve and the axis relating to the tool phase position ⁇ .
  • suction devices operated with excess pressure 12; 13 the same applies with the difference that the areas in the positive range for the pressure P(S1); P(S2) lie.
  • the areas A(S1); A(S2) by integral formation, mathematical approximation methods such as e.g. B. be determined by a numerical integration or the application of a trapezoidal formula.
  • the suction lifter 12 determined features A (S1); A(S2) or areas A(S1); A(S2) can be represented in a diagram as a cloud of points, for which, for example, a focus or center Z is calculated.
  • mathematical-statistical methods for example the normal distribution according to Gauss, on the distribution of the values of the two areas A(S1); A(S2) combined feature A(S1, S2), z.
  • B. construct a confidence ellipse within which a percentage of all points for the combined features A(S1, S2) corresponding to the confidence value ⁇ lie. As confidence values ⁇ z.
  • the combined or linked consideration of the results for the characteristic feature A(S1); A(S2), here the areas A(S1); A(S2) multiple handling tools 12; 13 can be used to derive an error type, e.g. B. from early or late sheets, skewed sheets, double sheets or package layers.
  • an error type e.g. B. from early or late sheets, skewed sheets, double sheets or package layers.
  • results of a measurement on handling tools 13; 12 of the other type, for example on transport tools 13, are taken into account in a three-dimensional ellipsoid.
  • Corresponding information about upcoming problems can then be sent via a broader database can be obtained.
  • evaluation means 32 control means 33, z. B. data processing means 33 are assigned with an implemented control logic
  • Deviations or automatically to the upcoming deviations In this case, the operator no longer has to intervene, or at least only in an emergency.
  • Evaluation means 32 and control means 33 can be integrated in the same data processing unit or spatially separate and only connected in terms of signals.
  • an inventive and/or particularly preferred embodiment of a feeder comprises a sensor system with at least one sensor S5, S6 on the side pointing in the transport direction T of the sheets 06 to be fed, i.e. on the front side of stack 09, and/or at least one sensor S7, S8 on the side facing away from transport direction T, i.e.
  • the respective sensor S5; S6; S7; S8 is preferably arranged at a level below the top edge of the stack and/or at least arranged in such a way that it is directed to a point on the stack below the top edge of the stack and/or from the front or rear to the side of the stack in question.
  • a sensor S5 designed as a laser scanner; S6, S7; S8 can be provided, which scans a distance or - in particular temporal - distance progression to the stack selectively at several points or continuously on at least one section of the stack width or at least provides information on the distance or distance progression and evaluates the determined distance or the relevant information.
  • information about the alignment of the stack edge at the level of these points can be determined by evaluating at least two points that are spaced apart from one another and are at the same height.
  • These sensors S5; S6 are spaced apart from one another transversely to the transport direction T and are preferably arranged at the same height and in the same horizontal alignment perpendicular to the transport direction T; S6 provided. They are preferably arranged in the area of front stops 16 .
  • the sensors S5; S6 are preferably arranged at a level below the upper front edge of the stack and/or at least arranged in such a way that they are directed to a point on the stack below the upper front edge of the stack. They are arranged on both sides of an imaginary vertical center plane E, which bisects the stack 09 viewed in the transverse direction, but can, for example, correspond to the processed sheet format to be moved horizontally.
  • S6 includes the sensors on the opposite side, i.e. the side facing away from the processing machine, i. H. Rear of the stack 09 two sensors S7; S8, in particular distance sensors S7; S8, through which a distance to a point on the back of the stack 09 can be measured - in particular at the same height.
  • the sensors S7; S8 are also spaced apart from one another transversely to the transport direction T and are preferably provided at the same height and perpendicular to the transport direction T horizontally aligned.
  • the sensors S7; S8 are preferably arranged at a level below the upper rear edge of the stack and/or at least arranged in such a way that they are directed to a point on the stack that is below the upper rear edge of the stack. They are arranged, for example, in columns 36 of a feeder frame, so that accessibility for changing piles is not impeded.
  • the measured values at the two, preferably four, sensors S5; S6; S7; S8 collected and evaluated.
  • evaluation means 32' are set up as data processing means 32', which occurs during the tracking, ie during the time to obtain the position of the top of the stack when the uppermost sheet 06 is removed, resulting in the profile of the at least two, preferably four, sensors S5; S6; S7; S8 to record the distances determined and to relate and evaluate their courses to one another.
  • Results of the evaluation can be output, for example, to a display means 34' and/or a control means 33', in particular with appropriately programmed data processing means 33'.
  • distances in particular a course of distances between sensors S5; S6; S7; S8 and stack 09 criteria that characterize the position and/or dimensions of the sheets 06 are derived.
  • Mathematical statistical methods are preferably used in the evaluation.
  • the measured values of the at least two, in particular four, sensors S5; S6; S7; S8 a profile of the stack 09 - on z. B. at least by sensors S5; S6; S7; S8 scanned page - which provides information about the length and/or the position, possibly down to individual sheets 06. Deviations in the length and/or in the position of the sheets 06 can be evaluated statistically.
  • control means 33' are provided, by means of which such a deviation in the dimensions, here a length deviation of sheet 06, is detected from the measured values and such a deviation via a change in the position and/or location of handling tools 12; 13, in particular of the handling tools 12; 13 comprehensive sheet separator 14, for example by controlling one or more corresponding drive means, automated in training, is counteracted in order to prevent an error in the separation.
  • the combined or linked consideration of the results for the characteristic criterion, here the - in particular temporal - distance profile at several points of the stack 09 can be used to derive a type of error, e.g. B. from early or late sheets, skewed sheets, double sheets or package layers
  • the sensor system comprising the pressure sensors and/or the distance sensors with associated evaluation means 32; 32' are preferably the above control means 33; 33' is provided, which has a signal connection to the evaluation means 32; 32' and the first and/or second handling means 12; 13 directly or indirectly acting drive means to this depending on the result of to position the evaluation.
  • an indirect drive can take place in that the handling tools 12; 13 comprehensive sheet separator 14 is provided or positioned.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Registering Or Overturning Sheets (AREA)

Description

Die Erfindung betrifft einen Anleger einer Bogen be- oder verarbeitende Maschine sowie ein Verfahren zur Erfassung und/oder Korrektur von in Lage und/oder Abmessungen abweichenden Bogen in einem Anleger einer Bogen be- oder verarbeitende Maschine gemäß dem Oberbegriff des Anspruchs 1 bzw. 10.The invention relates to a feeder of a sheet processing machine and a method for detecting and/or correcting sheets that differ in position and/or dimensions in a feeder of a sheet processing machine according to the preamble of claim 1 or 10.

An bogenverarbeitenden Druckmaschinen werden Anleger verwendet, um auf Stapeln vorbereitete Bogen unterschiedlichen Materials zu vereinzeln und über Fördermittel und z. B. einen Anlegtisch der Druckmaschine zuzuführen. Das Vereinzeln und Zuführen der Bogen erfolgt durch sog. Bogentrenner. Die Position der Bogen im Stapel und ihre tatsachlichen Abmessungen sind im allgemeinen unbekannt. Bogen können in ihren Schnittlangen Toleranzen größer 1 mm aufweisen und versetzt oder schief im Stapel liegen. Beide Zustande können zu Fehlern in der Vereinzelung bzw. Zuführung der Bogen in die Druckmaschine führen. Übliche Fehler sind dann z. B. Schiefbogen, Früh- oder Spätbogen und auch Doppelbogen. In einem solchen Fall besteht die Gefahr, den Druckprozess unterbrechen zu und die Maschine anzuhalten zu müssen. Ein manueller Eingriff des Bedieners zur Entnahme der fehlerhaften Bogen ist dann erforderlich.Investors are used on sheet-fed printing presses in order to separate sheets of different material that have been prepared on stacks and convey them via funding and z. B. to feed a feed table of the printing press. The sheets are separated and fed by so-called sheet separators. The position of the sheets in the stack and their actual dimensions are generally unknown. Sheets can have tolerances of more than 1 mm in their cutting length and can be offset or crooked in the stack. Both states can lead to errors in the separation or feeding of the sheets into the printing press. Common mistakes are then e.g. B. skewed arches, early or late arches and also double arches. In such a case, there is a risk of having to interrupt the printing process and stop the machine. Manual intervention by the operator to remove the faulty sheets is then required.

Aus der DE 10 2015 204 558 B4 ist eine Vorrichtung zum Ausrichten von Bogen bekannt, wobei am Anlegtisch eine die Ist-Lage der Bogenvorderkante des vordersten auf dem Anlegetisch durch Fördermittel geförderten Bogens erfassende Kontrolleinrichtung vorgesehen ist und eine ggf. erforderliche Korrektur der am Anlegtisch durch zwei unabhängig voneinander angetriebene Transportbänder bewirkt wird.From the DE 10 2015 204 558 B4 a device for aligning sheets is known, in which a control device is provided on the feed table that detects the actual position of the sheet leading edge of the foremost sheet conveyed on the feed table by conveying means, and any necessary correction of the sheet is effected on the feed table by two conveyor belts driven independently of one another.

Die DE 10 2004 005 575 A1 betrifft die Ermittlung eines Höhenniveaus, auf welchem sich ein oberster Bogen eines Stapels, d. h. die Lage der oberen Stapelkante, befindet. Dies wird dadurch erreicht, dass ein von oben auf den Stapelvorderkannten gerichteter optischer Sensor nur dann misst, wenn der Vorderanschlag abgestellt ist und die obersten Lagen des Stapels nach Entweichen von ggf. eingeschlossener Blasluft in Ruhe sind.the DE 10 2004 005 575 A1 relates to the determination of a level at which a top sheet of a stack, ie the position of the top edge of the stack, is located. This is achieved in that an optical sensor directed from above onto the front edges of the stack only measures when the front stop is switched off and the top layers of the stack are at rest after any trapped blown air has escaped.

Die DE 101 51 484 A1 offenbart einen Bogenanleger zur taktweisen Förderung von Bogen durch Sauger, wobei die Lage einer Vorderkante des aufzunehmenden oder aufgenommenen Bogens mittels optischen Sensoren erfasst wird, die von den Saugern mittgeführt sind und von oben oder unten auf die vordere Blattkante gerichtet sind. Bei Abweichung vom zur Transportrichtung senkrechten Verlauf wird eine einseitige Vor- oder Nacheilung in der Bewegung der Sauger veranlasst.the DE 101 51 484 A1 discloses a sheet feeder for cyclically conveying sheets by suction cups, the position of a front edge of the sheet to be taken up or taken up being detected by means of optical sensors which are carried along by the suction cups and are directed at the front sheet edge from above or below. If there is a deviation from the course perpendicular to the direction of transport, the suction cups move ahead or behind on one side.

Die DE 11 2007 001 617 T5 betrifft ein Einstellen eines einem mit Hochdruck betriebenem Ejektor eines Saugers beaufschlagten Arbeitsdruckes auf einen an das entsprechende Blatt und/oder den Betrieb der Druckmaschine angepassten Arbeitsdruckes durch Vergleich eines gemessenen und vorgegebenen Arbeitsdruckes. Dabei wird der Arbeitsdruck an einem vom Ejektor abgegebenen Unterdruck oder Überdruck durchgeführt.the DE 11 2007 001 617 T5 relates to setting a working pressure applied to an ejector of a suction cup operated at high pressure to a working pressure adapted to the corresponding sheet and/or the operation of the printing press by comparing a measured and predetermined working pressure. The working pressure is carried out on a negative pressure or positive pressure delivered by the ejector.

Die DE 103 56 107 A1 offenbart den Oberbegriff der Ansprüche 1 und 10 und betrifft einen Bogenanleger mit Vorderkantentrennung und berührungsloser Stapelabtastung, wobei an wenigstens einem der den obersten Bogen aufnehmenden Saugern eine Sensoreinrichtung zur berührungslosen Erfassung der Höhenlage der Stapeloberseite des Bogenstapels relativ zum Sauger auf die Stapeloberseite des Bogenstapels richtbar ist.the DE 103 56 107 A1 discloses the preamble of claims 1 and 10 and relates to a sheet feeder with leading edge separation and contact-free stack scanning, with a sensor device on at least one of the suction cups receiving the topmost sheet being able to be directed to the stack top of the sheet stack in contact-free detection of the height of the stack top of the sheet stack relative to the suction cup.

In der US 5,037,080 ist eine Vorrichtung zur Bogenlängenabfrage offenbart, welche im Anleger vorgesehene Fallsauger umfasst, die mit einer Abfragebohrung auf die Hinterkante des obersten Bogens gerichtet sind.In the U.S. 5,037,080 is a device for sheet length query disclosed, which includes provided in the feeder suction cups with a query hole on the Rear edge of the top sheet are directed.

Die DE 101 00 191 A1 betrifft einen Bogenanleger, dem zur Feststellung des Formates der gestapelten Bogen sowie zur Erfassung der Lage des Stapels bezüglich einer Maschinenmitte zu beiden des Stapels sowie rückseitig ein eine Entfernung erfassender Sensor zugeordnet ist. Nach Erfassung der Stapellage bezüglich der Maschinenmitte werden Arbeitsorgane der Maschine entsprechend gestellt und die Sensoren auf einer der Seiten und auf der Stapelrückseite abgeschaltet.the DE 101 00 191 A1 relates to a sheet feeder, which is assigned a distance-detecting sensor to determine the format of the stacked sheets and to detect the position of the stack with respect to a machine center to both of the stack and to the rear. After detecting the position of the stack in relation to the center of the machine, the working elements of the machine are set accordingly and the sensors on one of the sides and on the back of the stack are switched off.

Der Erfindung liegt die Aufgabe zugrunde, einen verbesserten Anleger einer Bogen be- oder verarbeitende Maschine sowie ein Verfahren zur Erfassung und/oder Korrektur von in Lage und/oder Abmessungen abweichenden Bogen in einem Anleger einer Bogen be- oder verarbeitende Maschine zu schaffen.The object of the invention is to provide an improved feeder of a sheet processing machine and a method for detecting and/or correcting sheets that differ in position and/or dimensions in a feeder of a sheet processing machine.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 bzw. 10 gelöst.The object is achieved according to the invention by the features of claim 1 and 10 respectively.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass bereits frühzeitig, also nicht erst unmittelbar am Eintritt in beispielsweise eine Anlage der Bogen be- oder verarbeitenden Maschine, eine Abweichung in der - insbesondere auf die Lage in der durch den Bogen aufgespannten Ebene bezogenen - Lage und/oder der - auf die Breite oder Länge bezogene Abmessung zu einer Soll-Lage bzw. Sollabmessung erkannt werden und ggf. eine Korrektur oder Berücksichtigung bereits bei Förderung in den durch die Bogen be- oder verarbeitende Maschine führenden Transportpfad möglich ist.The achievable with the invention consist in particular that already early, i.e. not immediately upon entry into, for example, a system of the sheet processing machine, a deviation in the position and/or in the width or length - in particular in relation to the position in the plane spanned by the sheet Dimension to a target position or target dimension can be recognized and, if necessary, a correction or consideration is already possible when conveying into the transport path leading through the sheet processing machine.

Von besonderem Vorteil ist eine Ausführung, wobei die Ergebnisse des mindestens einen Sensors, insbesondere zweier Sensoren, auswertende Auswertemittel dazu eingerichtet sind, den sich während des Nachführens des Stapels ergebenden Verlauf der durch den mindestens einen Sensor bzw. zwei Abstandssensoren ermittelten Abstände aufzuzeichnen und deren Verläufe miteinander in Beziehung zu setzen und auszuwerten.Of particular advantage is an embodiment in which the evaluation means evaluating the results of the at least one sensor, in particular two sensors, are set up to record the course of the distances determined by the at least one sensor or two distance sensors and their courses during the tracking of the stack to be correlated and evaluated.

Durch die Beobachtung einer sich ggf. aufbauenden Abweichung lassen sich auch bereits Tendenzen ableiten, die ein frühzeitiges Entgegenwirken ermöglichen, z. B. noch bevor eine Abweichung über tolerierbare Größen hinausgeht.By observing a deviation that may be building up, tendencies can already be derived that enable countermeasures to be taken at an early stage, e.g. B. even before a deviation goes beyond tolerable sizes.

Eine besonders vorteilhafte Weiterbildung mit mathematisch statistischer Auswertung der Messergebnisse ermöglicht zudem eine vorausschauende automatisierte Positionierung des Bogentrenners oder dessen Werkzeuge auf geänderte Bogenlängen und/oder -lagen. In Weiterführung können die Ergebnisse auch in die Steuerung weiterer am Transportpfad vorgesehener Aggregate einfließen, z. B. in die Phasenlage und/oder Geschwindigkeit an nachfolgenden Werken und/oder an Transportelementen wie z. B. einer Bogenwendeeinrichtung und/oder an der Auslage.A particularly advantageous further development with mathematical-statistical evaluation of the measurement results also enables predictive, automated positioning of the sheet separator or its tools for changed sheet lengths and/or positions. The results can also be incorporated into the control of other aggregates provided on the transport path, e.g. B. in the phase position and / or speed of subsequent works and / or transport elements such. B. a sheet turning device and / or at the delivery.

Durch eine erfindungsgemäße Sensorik mit auf der Vorder- und/oder auf der Rückseite mindestens eines, bevorzugt jeweils zweier das Stapelprofil abtastenden Sensoren, insbesondere Abstandsensoren, lässt sich über einen über eine Stapelhöhe gewonnenen Kurvenverlauf neben der frühzeitigen Identifikation einzelner Fehlbogen, d. h. Bogen mitA sensor system according to the invention with at least one, preferably two sensors scanning the stack profile on the front and/or on the back, in particular distance sensors, can be used to identify individual missing sheets at an early stage, ie sheets with

Fehllagen und/oder -abmessungen, auch bereits ein Trend feststellen und vorsteuern.Incorrect positions and/or dimensions, also identify and control a trend.

Als vorder- oder rückseitig vorgesehene Sensoren können zwei quer zur Transportrichtung zueinander beabstandete Abstandssensoren vorgesehen sein oder in einer hier nicht im Detail dargestellten Variante ein Laserscanner, der auf einem Bereich der Stapelbreite an mehreren Stellen oder durchgängig einen Abstand zum Stapel abtastet und auswertet.Two distance sensors that are spaced apart from one another transversely to the transport direction can be provided as sensors on the front or rear, or in a variant that is not shown in detail here, a laser scanner that scans and evaluates a distance to the stack at several points or continuously over an area of the stack width.

Durch eine vorteilhafte Weiterbildung einer zur Ermittlung von Abweichungen herangezogenen Sensorik mit in Greifwerkzeugen integrierten und über die Last bzw. den Lastverlauf Informationen liefernden Sensoren, insbesondere in oder an Sauggreifern integrierte Drucksensoren, und aus dem Lastverlauf, insbesondere Druckverlauf gewonnenen Kriterium für die Lage und/oder Abmessung, ist keine aufwendige und für unterschiedliche Formate zu justierende Messanordnung erforderlich. Bei o.g. Lage der bzw. des betreffenden Bogens handelt es sich um die Lage in der durch die Bogenebene aufgespannten Ebene, d. h. bei bevorzugt horizontaler Lage der Bogen im oder auf dem Stapel um dessen bzw. deren Lage in der horizontalen Ebene.An advantageous development of a sensor system used to determine deviations with sensors integrated in gripping tools and supplying information about the load or the load profile, in particular pressure sensors integrated in or on suction pads, and criteria for the position and/or obtained from the load profile, in particular the pressure profile dimensions, no complex measuring arrangement that has to be adjusted for different formats is required. The above-mentioned position of the arch concerned is the position in the plane spanned by the plane of the arch, i. H. with a preferred horizontal position of the sheet in or on the stack about its or their position in the horizontal plane.

In einer für die Erfindung besonders geeigneten Ausführung eines Anlegers einer Bogen be- oder verarbeitende Maschine, in welchem ein Stapel von zu verarbeitenden Bogen aufnehmbar ist, sind mindestens zwei quer zu einer Transportrichtung der Bogen zueinander beabstandete erste Handhabungswerkzeuge vorgesehen, durch welches ein oberster Bogen eines im Anleger aufgenommenen Stapels vom Stapel abhebbar ist und/oder mindestens zwei quer zu einer Transportrichtung der Bogen zueinander beabstandeten zweite Handhabungswerkzeuge, durch welches ein vom Stapel abgehobener oberster Bogen in Transportrichtung vom Stapel weg in einen sich stromabwärts anschließenden Transportpfad - der insbesondere stromabwärts in ein oder mehrere Werke zur Be- und/oder Verarbeitung der Bogen führt - transportierbar ist.In an embodiment of a feeder of a sheet processing machine that is particularly suitable for the invention, in which a stack of sheets to be processed can be accommodated, at least two first handling tools are provided which are spaced apart from one another transversely to a transport direction of the sheets, through which a top sheet of a of the stack received in the feeder can be lifted from the stack and/or at least two second handling tools spaced apart from one another transversely to a transport direction of the sheets, through which an uppermost sheet lifted from the stack in the transport direction away from the stack into a downstream transport path - which in particular downstream into one or leads to several works for the treatment and/or processing of the sheets - can be transported.

Erfindungsgemäß umfasst der Anleger eine Sensorik und mit dieser in Signalverbindung stehende Auswertemittel, durch welche der Bogen be- oder verarbeitenden Maschine zuzuführende Bogen - z. B. noch im Stapel und/oder im Laufe des Vereinzelns und/oder Förderns vom Stapel weg in den Transportpfad - auf eine Lage und/oder Abmessung der Bogen charakterisierende Kriterien hin überwachbar, auf eine Abweichungen von einem Soll oder Sollbereich hin auswertbar und Ergebnisse der Auswertung über eine Signalverbindung zur Visualisierung an Anzeigemittel und/oder zur Korrektur an Steuerungsmittel ausgebbar sind. Die Auswertemittel, die Anzeigemittel und/oder die Steuerungsmittel können am Anleger angeordnet oder aber physikalisch getrennt, jedoch über Signalverbindungen mit der am Anleger angeordneten Sensorik verbunden und diesem zugeordnet sein.According to the invention, the feeder comprises a sensor system and an evaluation means which is in signal communication with it, through which the sheet-processing machine to be fed sheets--e.g. B. still in the stack and/or in the course of separating and/or conveying away from the stack into the transport path - criteria characterizing the position and/or dimensions of the sheets can be monitored, evaluated for deviations from a target or target range and results of the Evaluation can be output via a signal connection for visualization to display means and/or for correction to control means. The evaluation means, the display means and/or the control means can be arranged on the feeder or they can be physically separate, but connected to the sensor system arranged on the feeder and assigned to it via signal connections.

Beim Betrieb des Anlegers werden in die be- oder verarbeitende Maschine zuzuführende Bogen - z. B. noch im Stapel und/oder im Laufe des Vereinzelns und/oder Förderns vom Stapel weg in den Transportpfad - mittels der Sensorik auf eine Lage und/oder Abmessung der Bogen charakterisierende Kriterien hin überwacht, auf eine Abweichungen von einem Soll oder Sollbereich hin ausgewertet und Ergebnisse der Auswertung visualisiert und/oder zu einer automatisierten Korrektur herangezogen.When the investor is in operation, arcs to be fed into the processing machine - e.g. B. still in the stack and / or in the course of separating and / or conveying away from the stack into the transport path - by means of the sensors for a position and / or dimension of the sheet characterizing criteria, evaluated for deviations from a target or target range and results of the evaluation are visualized and/or used for an automated correction.

In zu bevorzugender Ausführung umfasst die Sensorik auf der in Transportrichtung der zuzuführenden Bogen weisenden Vorderseite des Stapels ein oder mehrere Sensoren, durch welchen oder welche ein Abstand oder - insbesondere zeitlichem - Abstandsverlauf oder aber zumindest eine Information zu einem Abstand oder - insbesondere zeitlichem - Abstandsverlauf zu wenigstens zwei quer zur Transportrichtung zueinander beabstandeten Stellen an der in Transportrichtung weisenden Vorderseite des Stapels ermittelbar ist, und/oder auf der zur Transportrichtung entgegen gerichteten Rückseite des Stapels einen oder mehrere Sensoren, durch welchen oder welche ein Abstand oder - insbesondere zeitlichem - Abstandsverlauf oder aber zumindest Informationen zu einem Abstand oder - insbesondere zeitlichem - Abstandsverlauf zu wenigstens zwei quer zur Transportrichtung zueinander beabstandeten Stellen an der Rückseite des Stapels ermittelbar ist.In a preferred embodiment, the sensor system comprises one or more sensors on the front side of the stack pointing in the transport direction of the sheets to be fed in, through which a distance or - in particular over time - the course of the distance or at least information about a distance or - in particular over time - the course of the distance at least two locations that are spaced apart from one another transversely to the transport direction can be determined on the front side of the stack pointing in the transport direction, and/or one or more sensors on the rear side of the stack pointing in the opposite direction to the transport direction, by means of which a distance or - in particular a time - distance profile or else at least information about a distance or - in particular temporal - distance course to at least two transverse to Transport direction mutually spaced points on the back of the stack can be determined.

In einer besonders vorteilhaften Ausführungsform umfasst die Sensorik zwei quer zur Transportrichtung zueinander beabstandete Abstandssensoren auf der in Transportrichtung der zuzuführenden Bogen weisenden Vorderseite des Stapels umfasst, durch welche jeweils ein Abstand zu je zu je einer von zwei quer zur Transportrichtung (T) voneinander beabstandeten Stellen auf der stromabwärtigen Seite des Stapels ermittelba ist, oder/und zwei quer zur Transportrichtung zueinander beabstandete Abstandssensoren auf der gegenüberliegenden Rückseite des Stapels, durch welche als eine Lage und/oder Abmessung von Bogen charakterisierendes Kriterium jeweils ein Abstand oder - insbesondere zeitlicher - Abstandsverlauf zu je einer von zwei quer zur Transportrichtung (T) voneinander beabstandeten Stellen einer Stelle auf der Rückseite des Stapels meermittelbar ist.In a particularly advantageous embodiment, the sensor system comprises two distance sensors, which are spaced apart from one another transversely to the transport direction, on the front side of the stack pointing in the transport direction of the sheets to be fed in, through which a distance is measured in each case from one of two locations spaced apart transversely to the transport direction (T). the downstream side of the stack can be determined, and/or two distance sensors, which are spaced apart from one another transversely to the transport direction, on the opposite rear side of the stack, by means of which a distance or - in particular temporal - distance progression to each one is determined as a criterion characterizing a position and/or dimension of sheets can be mediated by the sea from two locations at a distance from one another transversely to the transport direction (T) of a location on the rear side of the stack.

Vom Ausdruck des Abstandes bzw. einer Information zu einem solchen soll in einem weiteren Sinne ein einen Abstand repräsentierendes und/oder ein mit diesem korrelierendes Maß mit umfasst sein.In a broader sense, the expression of the distance or information about such a distance should also include a measure that represents a distance and/or a measure that correlates with it.

Beim Betrieb eines solchen Vorrichtung wird mittels des mindestens einen Sensors, insbesondere zweier quer zur Transportrichtung zueinander beabstandeter Abstandssensoren auf der in Transportrichtung der zuzuführenden Bogen weisenden Vorderseite und/oder Rückseite des Stapels ein Abstand zu zwei quer zur Transportrichtung zueinander beabstandeten Stelle auf der stromabwärtigen und/oder stromaufwärtigen Seite des Stapels gemessen.During the operation of such a device, at least one sensor, in particular two distance sensors spaced apart from one another transversely to the transport direction, on the front and/or rear side of the stack pointing in the transport direction of the sheets to be fed in, a distance is determined from two points spaced apart transversely to the transport direction on the downstream and/or or upstream side of the stack.

In einer vorteilhaften Weiterbildung sind die beiden ersten und/oder zweiten Handhabungswerkzeuge als Sauger ausgeführt, wobei die Sensorik den ersten und/oder zweiten Handhabungswerkzeuge jeweils zugeordnete und als Drucksensoren ausgebildeter Sensoren umfasst, durch welche als eine Lage und/oder Abmessung von Bogen charakterisierendes Kriterium ein Druckverlauf im betreffenden Handhabungswerkzeug oder an einer Stelle des dem Handhabungswerkzeug zugeordneten Leitungsweges ermittelbar ist.In an advantageous development, the two first and/or second handling tools are designed as suction cups, with the sensor system being assigned to the first and/or second handling tools and acting as pressure sensors trained sensors, by means of which a pressure curve in the relevant handling tool or at a point of the line path associated with the handling tool can be determined as a criterion characterizing a position and/or dimension of sheets.

Im Betrieb wird durch die von der Sensorik umfassten und als Drucksensoren ausgebildete Sensoren als eine Lage und/oder Abmessung von Bogen charakterisierendes Kriterium ein Druckverlauf in ersten und/oder zweiten, als Sauger ausgebildeten Handhabungswerkzeugen oder an einer Stelle des dem betreffenden Handhabungswerkzeug zugeordneten Leitungsweges ermittelt.During operation, the sensors included in the sensor system and designed as pressure sensors determine a pressure curve in first and/or second handling tools designed as suction cups or at a point on the line path assigned to the handling tool in question as a criterion characterizing the position and/or dimension of sheets.

Bei oben genannter Lage handelt es sich um die Lage in einer durch die Bogenbreite und -länge aufgespannten, im für die Stapelanordnung gegebenen Normalfall z. B. horizontal verlaufenden Ebene.The above position is the position in a spanned by the sheet width and length, in the normal case given for the stack arrangement z. B. horizontal plane.

Vorteilhafte Weiterbildungen sind den abhängigen Ansprüchen sowie nachfolgenden Ausführungsbeispielen zu entnehmen.Advantageous developments can be found in the dependent claims and the following exemplary embodiments.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben.Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

Es zeigen:

Fig. 1
eine schematische Darstellung eines Anlegers und einer einem Druckwerk vorgeordneten Bogenanlage einer Bogendruckmaschine in Seitenansicht;
Fig. 2
eine Seitenansicht für eine Ausführung eines Bogentrenners mit Hub- und transportwerkzeugen;
Fig. 3
eine perspektivische Ansicht des Bogentrenners gemäß Fig. 2 von schräg hinten;
Fig. 4
eine vereinfachte Prinzipdarstellung für einen Druckverlauf an zwei Saugern und für den sich ergebenden Flächeninhalt;
Fig. 5
ein Beispiel für die Streuung von Werten für die Flächeninhalte der Druckverläufe an zwei Saugern mit Kennzeichnung von signifikanten Ausreißern;
Fig. 6
eine beispielhafte Darstellung für die Anordnung von sich für zwei Sauger ergebenden Werten für die Flächeninhalte in einer Punktewolke mit Darstellung eines Vertrauensbereichs in Form einer Ellipse;
Fig. 7
ein Stapel von Bogen mit überzeichneter Darstellung von Lage- oder Abmessungsfehlern;
Fig. 8
eine Draufsicht auf einen Anleger mit der Anordnung von Abstandssensoren.
Show it:
1
a schematic representation of a feeder and a printing unit upstream sheet feeder of a sheet-fed printing press in side view;
2
a side view of an embodiment of a sheet separator with lifting and transport tools;
3
a perspective view of the sheet separator according to FIG 2 from behind;
4
a simplified schematic diagram for a pressure curve on two suction cups and for the resulting surface area;
figure 5
an example of the scattering of values for the surface areas of the pressure curves on two suction cups with the identification of significant outliers;
6
an exemplary representation of the arrangement of values for the surface areas resulting for two suction cups in a point cloud with representation of a confidence interval in the form of an ellipse;
7
a stack of sheets with overdrawn representation of positional or dimensional errors;
8
a plan view of a feeder with the arrangement of distance sensors.

In Fig. 1 ist ausschnittweise eine bevorzugt als Bogendruckmaschine ausgebildete Bogen be- oder verarbeitende Maschine dargestellt. Sie kann jedoch grundsätzlich auch durch eine andere Bogen be- oder verarbeitenden Maschine wie z. B. eine Stanze, Schneid-, Lackier- oder sonstige Maschine mit dem Erfordernis einer eingangsseitigen Bogenvereinzelung gebildet sein.In 1 shows a detail of a sheet-processing machine preferably designed as a sheet-fed printing machine. In principle, however, you can also use another sheet-processing machine such as e.g. B. a punch, cutting, painting or other machine with the requirement of an input-side sheet separation can be formed.

Die hier am Beispiel einer Bogendruckmaschine erläuterte Bogen be- oder verarbeitende Maschine umfasst einen Anleger 01, z. B. Stapel- oder Bogenanleger, einen Bändertisch 02, eine Bogenanlage 03 und im Anschluss an die Bogenanlage 03 ein oder mehrere hier nicht im Detail dargestellte Werke 04 zur Be- und/oder Verarbeitung der Bogen 06 wie hier z. B. ein Druckwerk 04, Lackwerk, Trockenwerk, Kalandrierwerk oder dergleichen.The sheet-processing machine explained here using the example of a sheet-fed printing press comprises a feeder 01, e.g. B. pile or sheet feeder, a conveyor table 02, a sheet feeder 03 and, following the sheet feeder 03, one or more units 04, not shown here in detail, for treating and/or processing the sheets 06, as shown here, e.g. B. a printing unit 04, coating unit, drying unit, calendering unit or the like.

Im Anleger 01 ist ein Stapel 09, beispielsweise ein Bogenstapel 09 auf einem Stapeltisch 10 aufgesetzt. Der Stapeltisch 10 ist mit Hilfe einer Hebeeinrichtung 11 höhenverstellbar, um den obersten Bogen 06 des Bogenstapels 09 unabhängig von der Zahl der Bogen 06 im Stapel 09 auf einer festen oder nur gering veränderlichen, für die Übergabe der Bogen 06 an den Bändertisch 02 geeigneten Höhe zu halten. In der Darstellung der Fig. 1 liegen die Bogen 06 des Stapels 09 unmittelbar auf dem Stapeltisch 10, zwischen Stapel 09 und Stapeltisch 10 könnte sich aber auch eine Palette befinden, auf der der Stapel 09 zum Stapeltisch 10 transportiert und auf ihm abgesetzt worden ist und deren Höhe nicht bekannt ist, so dass aus der Stellung der Hebeeinrichtung 11 nicht auf die Höhe des Stapels 09 bzw. die Zahl der in dem Stapel 09 enthaltenen Bogen 06 geschlossen werden kann.A stack 09, for example a stack of sheets 09, is placed on a stacking table 10 in feeder 01. The stacking table 10 can be adjusted in height with the aid of a lifting device 11 in order to raise the top sheet 06 of the stack of sheets 09 to a fixed or only slightly variable height, regardless of the number of sheets 06 in the stack 09, so that it is suitable for transferring the sheets 06 to the belt table 02 keep. In the representation of 1 If the sheets 06 of the stack 09 are lying directly on the stacking table 10, but there could also be a pallet between the stack 09 and the stacking table 10, on which the stack 09 was transported to the stacking table 10 and placed on it and the height of which is not known that the position of the lifting device 11 cannot be used to determine the height of the stack 09 or the number of sheets 06 contained in the stack 09.

Ein Vorderanschlag 16 definiert eine vertikale Ebene, in der die Vorderkanten der Bogen 06 des Bogenstapels 09 positioniert sind. Eine Bogenklappe 17 ist um eine Klappenwelle 18 zwischen der in Fig. 1 gezeigten, den Vorderanschlag 16 geradlinig nach oben verlängernden Stellung entgegen dem Uhrzeigersinn in eine im Wesentlichen etwa horizontale Position schwenkbar, in der sie den Transport der Bogen 06 zum nachgeordneten Bändertisch 02 unterstützt.A front stop 16 defines a vertical plane in which the front edges of the sheets 06 of the sheet stack 09 are positioned. A curved flap 17 is fitted around a flap shaft 18 between the in 1 shown, which extends the front stop 16 in a straight line upwards, can be pivoted counterclockwise into a substantially approximately horizontal position, in which it supports the transport of the sheets 06 to the downstream belt table 02.

Der Anleger 01 umfasst, hier in einem Bogentrenner 14 zusammengefasst, diverse Werkzeuge 12; 13 zum Zerlegen des Stapels 09 in einzelne Bogen 06 und zum Abtransportieren der Bogen 06 zu den Druckwerken 04 und ggf. anderen Werken der Bogendruckmaschine.The feeder 01 comprises various tools 12, combined here in a sheet separator 14; 13 for dividing the stack 09 into individual sheets 06 and for transporting the sheets 06 away to the printing units 04 and possibly other units of the sheet-fed printing press.

Zu diesen Werkzeugen 12; 13 gehören zum einen mehrere sogenannte Sauger 12, insbesondere als Trenn- oder Hubsauger 12 ausgebildete Handhabungswerkzeuge 12, insbesondere Hubwerkzeuge 12, die über einer in Transportrichtung T der Bogen 06 hinteren Kante 05 des Stapels 09 angeordnet und im Wesentlichen in vertikaler Richtung bewegbar sind. Die Trennsauger 12 umfassen jeweils eine nach unten, zum Stapel 09 hin offene Saugglocke aus einem flexiblen Kunststoff, die an ihrem oberen Ende mit einer gemeinsamen Unterdruckquelle verbunden sind. Der Unterdruck muss ausreichend sein, um die Saugglocken sicher an dem vom Stapel 09 abzuhebenden Bogen 06 haften zu lassen, er darf aber nicht so stark sein, dass er den Bogen 06 in die Saugglocke hineinzieht und dadurch verformt. Wenn nicht alle Saugglocken der Trennsauger 12 an einem anzuhebenden Bogen 06 anliegen, kann der Luftstrom über eine nicht abgedeckte Saugglocke dazu führen, dass in den anderen Saugglocken der zum Anheben nötige Unterdruck nicht erreicht wird. Für ein sicheres Anheben eines Bogens 06 ist es daher wichtig, dass alle Trennsauger 12 gleichzeitig mit ihm in Kontakt kommen. Zu diesem Zweck kann jeder Trennsauger 12 mit Hilfe eines eigenen Antriebs, insbesondere eines Linearstellgliedes, relativ zum Bogentrenner 14 beweglich sein, vorzugsweise ist ein gemeinsamer Rahmen, in dem alle Trennsauger 12 gehalten sind, mit Hilfe eines schnellen, leistungsstarken Hauptstellgliedes relativ zum Bogentrenner 14 beweglich, um den Bogen 06 vom Stapel 09 anzusaugen und entlang der hinteren Kante 05 anzuheben, und um Unebenheiten an der Oberseite des Stapels 09 auszugleichen und einen gleichzeitigen Kontakt aller Trennsauger 12 mit dem anzuhebenden Bogen 06 sicherzustellen, sind die Trennsauger 12 mit Hilfe von Hilfsstellgliedern relativ zum Rahmen verstellbar, wobei letztere langsamer sein und einen kleineren Hub haben können als das Hauptstellglied.Among these tools 12; 13 include, on the one hand, a plurality of so-called suction cups 12, in particular handling tools 12 embodied as separating or lifting suction cups 12, in particular lifting tools 12, which are arranged above a rear edge 05 of the stack 09 in the transport direction T of the sheets 06 and can be moved essentially in the vertical direction. The separating suckers 12 each include one downward, towards the stack 09 open suction cups made of flexible plastic, which are connected at their upper end to a common vacuum source. The negative pressure must be sufficient to allow the suction cups to adhere securely to the sheet 06 to be lifted from the stack 09, but it must not be so strong that it draws the sheet 06 into the suction cup and deforms it as a result. If not all of the suction bells of the suction separator 12 are in contact with a sheet 06 to be lifted, the air flow over an uncovered suction bell can result in the other suction bells not achieving the negative pressure required for lifting. For a safe lifting of a sheet 06, it is therefore important that all suction separators 12 come into contact with it at the same time. For this purpose, each suction separator 12 can be movable relative to the sheet separator 14 with the aid of its own drive, in particular a linear actuator; a common frame in which all suction separators 12 are held is preferably movable relative to the sheet separator 14 with the aid of a fast, powerful main actuator , in order to suck the sheet 06 from the stack 09 and lift it along the rear edge 05, and to even out any unevenness on the upper side of the stack 09 and to ensure simultaneous contact of all suction separators 12 with the sheet 06 to be lifted, the suction separators 12 are relative with the aid of auxiliary actuators adjustable to the frame, the latter being able to be slower and have a smaller stroke than the main actuator.

Als ein weiteres Werkzeug 15 des Bogentrenners 14 kann ein als Tasterfuß 15 ausgebildetes Werkzeug 15 vorgesehen sein, der zwischen einer in Fig. 1 gezeigten, entlang der hinteren Kante 05 auf den Stapel 09 drückenden Haltestellung und einer gegenüber der Haltestellung angehobenen und entgegen der Transportrichtung T hinter die hintere Kante 05 versetzten Ruhestellung bewegbar ist. In der Haltestellung wird der Tasterfuß 15 platziert, wenn der oberste Bogen 06 des Stapels 09 von den Trennsaugern 12 entlang der hinteren Kante 05 angehoben worden ist, um zu verhindern, dass darunterliegende Bogen 06 des Stapels 09 aufgewirbelt werden, wenn eine hinter der hinteren Kante 05 in Höhe der Oberseite des Stapels 09 angeordnete Blaseinrichtung 19 Luft in einen zwischen dem angehobenen Bogen 06 und dem restlichen Stapel 09 offenen Spalt 07 einbläst.As a further tool 15 of the sheet separator 14, a tool 15 designed as a feeler foot 15 can be provided, which is located between an in 1 shown, along the rear edge 05 on the stack 09 pressing holding position and a relative to the holding position raised and opposite to the transport direction T behind the rear edge 05 offset rest position. The feeler foot 15 is placed in the holding position when the top sheet 06 of the stack 09 has been lifted by the suction separators 12 along the rear edge 05, in order to prevent the underlying sheets 06 of the stack 09 from being whirled up when one behind the rear edge 05 blowing device 19 arranged at the height of the top of the stack 09 blows air into an open gap 07 between the lifted sheet 06 and the rest of the stack 09.

Des Weiteren sind am Bogentrenner 14 Werkzeuge 13, z. B. Sauger 13, insbesondere als Transportsauger 13 ausgebildete Handhabungswerkzeuge 13, insbesondere Transportwerkzeuge 13 vorgesehen, die eine vorwiegend vertikale Bewegung in oder entgegen der Transportrichtung T ausführen. Die Transportsauger 13 weisen wie die Trennsauger 12 flexible Saugglocken auf, die nach Anheben der Trennsauger 12 mit Unterdruck beaufschlagt werden, um den angehobenen Bogen 06 an sich zu ziehen. Gleichzeitig werden die Trennsauger 12 nicht mehr mit Unterdruck beaufschlagt, so dass sie den Bogen 06 freigeben. Die von der Blaseinrichtung 19 in den Spalt 07 eingeblasene Luft hebt den Bogen 06 auf seiner gesamten Fläche vom Stapel 09 ab und bildet unter dem Bogen 06 ein Luftkissen, auf dem der Bogen 06, angetrieben durch die Horizontalbewegung der Transportsauger 13, über die dann in die Horizontale geschwenkte Bogenklappe 17 hinweg auf den Bändertisch 02 geschoben wird.Furthermore, the sheet separator 14 tools 13, z. B. suction cup 13, in particular designed as a transport suction cup 13, handling tools 13, in particular transport tools 13 are provided, which perform a predominantly vertical movement in or against the transport direction T. Like the suction separators 12, the transport suckers 13 have flexible suction cups which, after the suction separators 12 have been raised, are subjected to a vacuum in order to pull the lifted sheet 06 towards them. At the same time, vacuum is no longer applied to suction separators 12, so that they release sheet 06. The air blown into gap 07 by blower device 19 lifts sheet 06 from stack 09 over its entire surface and forms an air cushion under sheet 06, on which sheet 06, driven by the horizontal movement of transport suckers 13, over which the the horizontal pivoted sheet flap 17 is pushed away onto the belt table 02.

Oben genannte Sauger 12; 13 können alternativ auch als nach dem Bernoulli-Prinzip arbeitend, kurz als sog. Bernoulli-Sauger, ausgeführt sein. Für diesen Fall ist Obiges entsprechend anzuwenden mit dem Unterschied, dass sie mit einer Überdruckquelle verbunden sind und mit unt5er Überdruck gegenüber der Umgebung stehender Luft betrieben werden bzw. sind.Aforesaid sucker 12; 13 can alternatively also be designed as working according to the Bernoulli principle, in short as a so-called Bernoulli suction device. In this case, the above applies accordingly with the difference that they are connected to an overpressure source and are or are operated with air that is under overpressure compared to the environment.

Der dem Anleger 01 nachgeordnete Bändertisch 02 ist im Ausführungsbeispiel als Saugbändertisch 02 ausgebildet. Er umfasst vorzugsweise zwei Walzen 20; 21, beispielsweise eine Antriebswalze 20 und eine Umlenkwalze 21. Zwischen den zwei Walzen 20; 21 erstreckt sich ein ein- oder mehrteiliges Tischblech 22. Das Tischblech 22 bildet die vielfach durchbrochene Oberseite eines Saugkastens 23. Die Antriebswalze 20 und die Umlenkwalze 21 sind von mindestens einem Transportband 24 umschlungen, das wie das Tischblech 22, über das es sich erstreckt, vielfach durchbrochen ist, so dass es nicht am Tischblech 22 festgesaugt wird, wohl aber ein Bogen 06 an das Transportband 24 angesaugt wird.The belt table 02 downstream of the feeder 01 is designed as a suction belt table 02 in the exemplary embodiment. It preferably comprises two rollers 20; 21, for example a drive roller 20 and a deflection roller 21. Between the two rollers 20; 21 extends a one-part or multi-part table plate 22. The table plate 22 forms the multiple perforated upper side of a suction box 23. The drive roller 20 and the deflection roller 21 are wrapped by at least one conveyor belt 24 which, like the table plate 22 over which it extends, is broken many times, so that it is not sucked firmly to the table plate 22, but a sheet 06 is sucked onto the conveyor belt 24.

Die Umlaufgeschwindigkeit des Transportbandes 24 ist im Allgemeinen kleiner als das Verhältnis von Kantenlänge der Bogen 06 zur Zykluszeit des Bogentrenners 14, so dass, wenn die Transportsauger 13 beginnen, einen neuen Bogen 06 über die Bogenklappe 17zu schieben, der vorherige Bogen 06 sie noch nicht vollständig passiert hat. So wird auf dem Transportband 24 ein unterschuppter Strom von Bogen 06 gebildet, in den die Zahl der miteinander überlappenden Bogen 06 je nach Umlaufgeschwindigkeit, Kantenlänge und Zykluszeit variabel ist.The circumferential speed of the conveyor belt 24 is generally lower than the ratio of the edge length of the sheets 06 to the cycle time of the sheet separator 14, so that when the transport suckers 13 begin to push a new sheet 06 over the sheet flap 17, the previous sheet 06 has not yet completely pushed it happened. A shingled flow of sheets 06 is thus formed on the conveyor belt 24, in which the number of sheets 06 overlapping one another is variable depending on the circulation speed, edge length and cycle time.

Die Bogenanlage 03, zu der die Bogen 06 von dem umlaufenden Transportband 24 gefördert werden, umfasst einen Anlegtisch 26 und, an einem in Transportrichtung T hinteren Rand des Anlegtischs 26, Anschläge 27, die aus ihrer in Fig. 1 gezeigten, den Förderweg der Bogen 06 blockierenden Anschlagstellung versenkbar sind, um einem an den Anschlägen 27 anliegenden Bogen 06 den Weg zu dem nachfolgenden Druckwerk 04 freizugeben, von dem in Fig. 1 eine Transfertrommel 29, ein Gegendruckzylinder 30 und ein Gummituchzylinder 31 gezeigt sind.The sheet feeder 03, to which the sheets 06 are conveyed by the circulating conveyor belt 24, comprises a feed table 26 and, on a rear edge of the feed table 26 in the transport direction T, stops 27, which from their in 1 shown, blocking the conveying path of the sheets 06, can be lowered in order to clear the path for a sheet 06 resting against the stops 27 to the following printing unit 04, from which in 1 a transfer drum 29, an impression cylinder 30 and a blanket cylinder 31 are shown.

O. g. Transport der Bogen 06 über die Bogenanlage 03 und ein oder mehrere Werke 04 und ein oder mehrere Werke, z. B. Druckwerke 04 bis in eine Auslage kann Störungen unterliegen, die durch Fehler in der Lage oder Abmessung der transportierten Bogen 06 kommt. Diese können bereits bei der Zufuhr der Bogen 06 im Anleger 01 verursacht sein, da die Bogen 06 im Stapel 09 in der Schnittlänge variieren können oder aber ggf. im Stapel 09 versetzt oder schief liegen (siehe z. B. Fig. 7 in überzeichneter Darstellung).O.g. Transport of the sheets 06 via the sheet feeder 03 and one or more units 04 and one or more units, e.g. B. Printing units 04 to a delivery can be subject to disruptions caused by errors in the position or dimensions of the transported sheets 06. These can already be caused when the sheets 06 are fed into the feeder 01, since the cut lengths of the sheets 06 in the stack 09 can vary or possibly be offset or crooked in the stack 09 (see e.g. 7 in exaggerated representation).

Zur Ermittlung von Abweichungen in Lage und/oder Abmessung der durch den Anleger 01 in die be- oder verarbeitende Maschine hinein zu fördernden Bogen 06 zu einer Soll-Lage oder einer Sollabmessung umfasst der Anleger 01 nun eine Sensorik, deren Ausgangssignale mittels hier lediglich schematisch angedeuteter Auswertemittel 32; 32', insbesondere entsprechend eingerichteter Datenverarbeitungsmittel 32; 32', auf ggf. vorliegenden Abweichungen in Lage und/oder Abmessung hin auswertbar sind bzw. ausgewertet werden (siehe z. B. Fig. 2 und Fig. 3 oder Fig. 8). Das Auswerteergebnis kann über eine Ausgabeschnittstelle auf beispielsweise einem Anzeigemittel 34; 34' visualisierbar sein. Bei o. g. Lage handelt es sich um die Lage in einer durch die Bogenbreite und -länge aufgespannten, und im für die Stapelanordnung gegebenen Normalfall eines ebenen Standes z. B. horizontal verlaufende, Ebene.In order to determine deviations in the position and/or dimensions of the sheets 06 to be fed into the processing machine by feeder 01 from a target position or a target dimension, feeder 01 now includes a sensor system whose Output signals by means of evaluation means 32, which are only indicated schematically here; 32', in particular correspondingly configured data processing means 32; 32', can be evaluated or are evaluated for any deviations in position and/or dimensions (see e.g. 2 and 3 or 8 ). The evaluation result can be displayed via an output interface, for example on a display means 34; 34' can be visualized. The above position is the position in a spanned by the sheet width and length, and given for the stack arrangement normal case of a level stand z. B. horizontal plane.

In besonders vorteilhafter Weiterbildung können den Auswertemitteln 32; 32' Steuerungsmittel 33; 33', z. B. Datenverarbeitungsmittel 33; 33' mit einer in diesen implementierten Steuerungslogik, zugeordnet sein, durch welche in Abhängigkeit vom Auswerteergebnis eine der Abweichung entgegen gerichtete Korrektur herbeiführbar ist bzw. herbeigeführt wird, z. B. über eine Veränderung in der Position und/oder Lage von Handhabungswerkzeugen 12; 13, insbesondere des die Handhabungswerkzeuge 12; 13 umfassenden Bogentrenners 14, beispielsweise durch Ansteuerung eines oder mehrerer entsprechender Antriebsmittel über eine zugeordnete Antriebansteuerung. In Weiterbildung erfolgt dies automatisiert über die zugeordneten Steuerungsmittel 33; 33'.In a particularly advantageous development, the evaluation means 32; 32' control means 33; 33', e.g. B. data processing means 33; 33' with a control logic implemented in these, by means of which, depending on the evaluation result, a correction directed counter to the deviation can be brought about or is brought about, e.g. B. via a change in the position and / or location of handling tools 12; 13, in particular of the handling tools 12; 13 comprehensive sheet separator 14, for example by controlling one or more corresponding drive means via an associated drive control. In a further development, this takes place automatically via the assigned control means 33; 33'.

Grundsätzlich kann eine beliebig ausgeführte Sensoreinrichtung vorgesehen sein, anhand deren Ausgangsignal eine Lage und/oder Abmessung der Bogen 06 charakterisierende Kriterien gewonnen werden können und anhand derer Abweichungen in Lage und/oder Abmessung der durch den Anleger 01 in die be- oder verarbeitende Maschine hineinzufördernden Bogen 06 zu einem Soll oder Sollbereich feststellbar und im Idealfall quantifizierbar ist.In principle, any sensor device can be provided, based on the output signal of which criteria characterizing the position and/or dimensions of the sheets 06 can be obtained and on the basis of which deviations in the position and/or dimensions of the sheets to be fed into the processing machine by feeder 01 06 can be determined for a target or target range and ideally quantified.

In einer vorteilhaften Weiterbildung der unten detaillierter dargelegten Ausführung des Anlegers mit wenigstens einem stromabwärtig und/oder mindestens einem stromaufwärtig angeordneten Sensor S5, S6; S7; S8 kann die Sensorik für zumindest einen Teil der die Bogen 06 aufnehmenden Handhabungswerkzeuge 12; 13, insbesondere der Sauger 12; 13, diesen zugeordnete, als Drucksensoren S1; S2; S3; S4 ausgebildeter Sensoren S1; S2; S3; S4 umfassen, durch welchen ein Druck P(S1); P(S2) oder Druckverlauf im Sauger 12; 13 oder an einer Stelle des dem Sauger 12; 13 zugeordneten Leitungsweges ermittelbar ist. In dieser Ausgestaltung wird aus einem Druck P(S1); P(S2) oder insbesondere Druckverlauf ein Kriterium für die Lage und/oder Abmessung der Bogen 06 gewonnen. Dieser ermittelbare Druck P(S1); P(S2) stellt bei aktivem Betrieb für mit einer Unterdruckquelle verbundene Sauger 12; 13 einen Druckverlauf mit einem Unterdruck, d. h. einen Verlauf mit einem unter Umgebung liegenden Druck P(S1); P(S2) dar, im Fall von nach dem Bernoulli-Prinzip arbeitenden Saugern 12; 13 einen Druckverlauf mit einem Überdruck, d. h. einen Verlauf mit einem über Umgebung liegenden Druck P(S1); P(S2). Grundsätzlich könnte ein Lastverlauf statt über den Druckverlauf auch bei Einsatz von Saugern 12; 13 durch entsprechende Sensoren S1; S2; S3; S4 in anderer Weise, beispielsweise durch mechanische Kraftaufnehmer oder dergleichen, erfolgen.In an advantageous development of the embodiment of the feeder set out in more detail below, with at least one downstream and/or at least one upstream sensor S5, S6; S7; S8 can be the sensors for at least part of the Sheet 06 receiving handling tools 12; 13, in particular the sucker 12; 13 associated therewith as pressure sensors S1; S2; S3; S4 trained sensors S1; S2; S3; S4, through which a pressure P(S1); P(S2) or pressure curve in the suction cup 12; 13 or at a point of the sucker 12; 13 associated line path can be determined. In this embodiment, a print P(S1); P(S2) or, in particular, the pressure profile, a criterion for the position and/or dimensions of sheets 06 is obtained. This determinable pressure P(S1); P(S2) represents, during active operation, for suckers 12 connected to a vacuum source; 13 shows a pressure curve with a negative pressure, ie a curve with a pressure P(S1) lying below ambient; P(S2), in the case of suckers operating according to the Bernoulli principle 12; 13 shows a pressure profile with an overpressure, ie a profile with a pressure P(S1) above ambient; P(S2). In principle, a load curve could also be used with the use of suckers 12; 13 by corresponding sensors S1; S2; S3; S4 in a different way, for example by mechanical force transducers or the like.

In einer hier dargestellten und bevorzugten Ausführung für die Weiterbildung ist zwei quer zur Transportrichtung T beabstandeten Trennsaugern 12 jeweils ein Sensor S1; S2, insbesondere Drucksensor S1; S2 zugeordnet, insbesondere in diesen integriert, durch welche ein Last- bzw. Druckverlauf beim Anheben der Bogen 06 ermittelbar ist. Stattdessen oder bevorzugt zusätzlich hierzu ist zwei quer zur Transportrichtung T beabstandeten Transportsaugern 13 jeweils ein Sensor S3; S4, insbesondere Drucksensor S3; S4 zugeordnet, insbesondere in diesen integriert, durch welche ein Lastverlauf, insbesondere Druckverlauf beim Transport der Bogen 06 entlang der Transportrichtung T ermittelbar ist. Von der jeweiligen Mehrzahl von Handhabungswerkzeugen 12; 13, also den Hubwerkzeugen 12 und den Transportwerkzeugen 13, wird vorzugsweise zwei quer beabstandeten Handhabungswerkzeugen 12; 13 ein Sensor S1; S2; S3; S4 zugeordnet, welche beide innerhalb einer Breite eines kleinsten zuzuführenden Bogenformates liegen und/oder welche im kleinsten zuzuführenden Bogenformat am weitesten auseinander liegen. Z. B. sind dies die jeweils am weitesten außen liegenden Handhabungswerkzeuge 12; 13, die jedoch so angeordnet sind, dass sie auch das schmalste Format abdecken. Grundsätzlich können auch mehr als zwei Handhabungswerkzeugen 12; 13 selben Typs Sensoren S1; S2; S3; S4 zugeordnet sein.In a preferred embodiment shown here for the further development, two separating suckers 12 spaced transversely to the transport direction T are each provided with a sensor S1; S2, in particular pressure sensor S1; Assigned to S2, in particular integrated into it, by means of which a load or pressure curve can be determined when sheets 06 are lifted. Instead or preferably in addition to this, two transport suckers 13 spaced transversely to the transport direction T are each provided with a sensor S3; S4, in particular pressure sensor S3; Assigned to S4, in particular integrated into it, through which a load profile, in particular pressure profile, can be determined during the transport of sheets 06 along the transport direction T. From the respective plurality of handling tools 12; 13, ie the lifting tools 12 and the transport tools 13, is preferably two transversely spaced handling tools 12; 13, a sensor S1; S2; S3; S4 assigned, both of which are within a width of a smallest sheet format to be fed and/or which are furthest apart in the smallest sheet format to be fed. Eg these are the respective outermost handling tools 12; 13, but arranged in such a way that they also cover the narrowest format. In principle, more than two handling tools 12; 13 sensors of the same type S1; S2; S3; be assigned to S4.

Die Drucksensoren S1; S2; S3; S4 können zwar grundsätzlich an einer beliebigen Stelle im dem dem betreffenden Sauger 12; 13 zugeordneten und mit dem Arbeitsdruck, d. h. Unter- oder Überdruck, beaufsachlagbaren Leitungsweg vorgesehen sein. Vorteilhaft ist dessen Anordnung jedoch saugernah oder insbesondere direkt am oder im Sauger 12; 13 selbst.The pressure sensors S1; S2; S3; Although S4 can in principle at any point in the relevant sucker 12; 13 associated and with the working pressure, d. H. Negative or positive pressure, line path that can be subjected to pressure may be provided. However, its arrangement is advantageous near the sucker or in particular directly on or in the sucker 12; 13 himself.

Der Last- bzw. Druckverlauf an den einzelnen Handhabungswerkzeugen 12; 13, insbesondere an zwei Handhabungswerkzeugen 12; 13 eines selben Typs und/oder in Korrelation zueinander, können grundsätzlich in beliebiger Weise ausgewertet und gegenüber einem Soll bewertet werden. Dabei kann z. B. für einen Bogen 06 mit korrekter Lage und Abmessung ein für das Niveau und/oder den Verlauf charakteristisches Merkmal A(S1); A(S2); A(S1, S2) extrahiert oder gebildet werden, dieses als Soll mit einem sich aktuell bei der Aufnahme und dem Transport ergebenden Ergebnis für das Merkmal A(S1); A(S2); A(S1, S2) verglichen und das Vergleichsergebnis auf Abweichungen hin ausgewertet werden. Von besonderem Vorteil ist hierbei, wenn der Sollzustand durch Messung über eine Vielzahl von aufgenommenen und geförderten Bogen 06 unter Anwendung statistischer Methoden, z. B. als Mittelwert M1; M2 mit einem beispielsweise als Abweichung tolerierten oder tolerierbaren Vertrauensbereich γ; γ(S1); γ(S2) bestimmt wird. Von Vorteil kann es sein, wenn dieser bestimmte Mittelwert M1; M2 für die weitere Produktion nicht statisch ist, sondern sich über eine definiere Vielzahl von z. B. mehr als 50 zuletzt betrachteter Ereignisse für das Merkmal A(S1); A(S2); A(S1, S2) als Soll mit einem Vertrauensbereich γ; y(S1); y(S2) ermittelt wird.The load or pressure profile on the individual handling tools 12; 13, in particular on two handling tools 12; 13 of the same type and/or in correlation with each other can basically be evaluated in any way and evaluated against a target. In doing so, e.g. B. for a sheet 06 with the correct position and dimensions, a feature A(S1) that is characteristic of the level and/or course; A(S2); A(S1, S2) are extracted or formed, this as a target with a result for the feature A(S1) currently obtained during recording and transport; A(S2); A(S1, S2) are compared and the result of the comparison is evaluated for deviations. It is particularly advantageous here if the desired state can be determined by measuring a large number of sheets 06 that have been picked up and conveyed using statistical methods, e.g. B. as mean value M1; M2 with a confidence interval γ that is or can be tolerated as a deviation, for example; γ(S1); γ(S2) is determined. It can be advantageous if this specific mean value M1; M2 is not static for further production, but can be defined via a large number of e.g. B. more than 50 most recently viewed events for feature A(S1); A(S2); A(S1, S2) as target with a confidence interval γ; y(S1); y(S2) is determined.

In einer hier dargestellten und bevorzugten Ausführung kommt als Merkmal A(S1); A(S2); A(S1, S2) ein Maß für die sich bei Auftragung des Verlauf für den ermittelten Druck P(S1); P(S2) über den vollen oder zumindest einen Teil eines Aufnahme- und Förderzyklus der betreffenden Sauger 12; 13 für die Aufnahme und die Förderung eines Bogens 06, d. h. eines Bewegungszyklus' bis zur Einnahme der Ausgangslage, unter der Kurve, d. h. zwischen Kurve und Abszisse, ergebenden Flächeninhalte A(S1); A(S2) zur Anwendung. Bei Überdruck liegt eine solche Fläche oberhalb, bei Unterdruck unterhalb der Abszisse. Dies ist z. B. in Fig. 4 exemplarisch und schematisch anhand der über einen Bewegungszyklus des linken und rechten Hubsaugers 12 anliegenden Unterdruckes und der zwischen der jeweiligen Kurve und der die Werkzeugphasenlage φ betreffende Achse liegenden Flächen dargestellt. Für mit Überdruck betriebene Sauger 12; 13 ist Entsprechendes anzuwenden mit dem Unterschied, dass die Flächen im positiven Bereich für den Druck P(S1); P(S2) liegen. Aus den gewonnenen typischen Verläufen der Messwerte können die Flächeninhalte A(S1); A(S2) durch Integralbildung, mathematische Näherungsverfahren wie z. B. durch eine numerische Integration oder die Anwendung einer Trapezformel ermittelt werden.In a preferred embodiment shown here, the feature A(S1); A(S2); A(S1, S2) is a measure of the pressure P(S1); P(S2) over the full or at least part of a pick-up and delivery cycle of the suction cups 12 in question; 13 for picking up and conveying a sheet 06, ie a movement cycle until the starting position is assumed, under the curve, ie between the curve and the abscissa, resulting in surface areas A(S1); A(S2) to apply. Such a surface is above the abscissa in the case of overpressure and below it in the case of underpressure. This is e.g. Am 4 as an example and schematically based on the vacuum applied over a movement cycle of the left and right lifting suction device 12 and the surfaces lying between the respective curve and the axis relating to the tool phase position φ. For suction devices operated with excess pressure 12; 13 the same applies with the difference that the areas in the positive range for the pressure P(S1); P(S2) lie. The areas A(S1); A(S2) by integral formation, mathematical approximation methods such as e.g. B. be determined by a numerical integration or the application of a trapezoidal formula.

Kommt es wie z. B. in Fig. 5 beispielhaft gezeigt beim definierten Merkmal A(S1); A(S2) Auffälligkeiten, z. B. zu signifikanten "Ausreißern aus einem definierten Toleranzbereich, z. B. dem betreffenden Vertrauensbereich γ(S1); γ(S2), so können Rückschlüsse auf bestimmte Fehler getroffen werden. Im Vergleich aufeinanderfolgender Ergebnisse für das betreffende Merkmal A(S1); A(S2) oder insbesondere einer Kombination der Ergebnisse von Merkmalen A(S1); A(S2) an mehreren Handhabungswerkzeugen 12; 13 bzw. Saugern 12; 13, hier der Werte für die Flächeninhalte A(S1); A(S2), ist eine Mustererkennung im Fehlerfall möglich, die auf die Ursachen der entsprechenden Fehlerbilder schließen lässt und somit eine frühe, vorzugsweise automatisierte Korrektur des betreffenden Handhabungswerkzeuges 12; 13 ermöglicht. Dies wäre beispielsweise für eine Korrektur eines als Frühbogen erkannten Bogens 06 eine Verlagerung zumindest der Transportwerkzeuge 13, bevorzugt jedoch des diese Transportwerkzeuge 13 umfassenden Bogentrenners 14, zur Stapelhinterkante hin. Durch die Mustererkennung lassen sich sämtliche klassischen Fehlerbilder wie Früh- und Spätbogen, Schiefbogen, Doppelbogen oder Paketlagen bereits in ihrem Entstehen sicher erkennen und können vermieden werden.Does it come like e.g. Am figure 5 shown as an example for the defined feature A(S1); A(S2) abnormalities, e.g. B. to significant "outliers from a defined tolerance range, e.g. the relevant confidence interval γ(S1); γ(S2), conclusions can be drawn about certain errors. By comparing consecutive results for the relevant feature A(S1); A(S2) or in particular a combination of the results of features A(S1); A(S2) on several handling tools 12; 13 or suction cups 12; 13, here the values for the surface areas A(S1); A(S2), pattern recognition is possible in the event of an error, which allows conclusions to be drawn about the causes of the corresponding error patterns and thus enables early, preferably automated correction of the relevant handling tool 12; 13. This would be, for example, a relocation of at least the transport tools 13 for correcting a sheet 06 identified as a premature sheet , but preferably of the sheet separator 14 comprising these transport tools 13, toward the rear edge of the stack all classic error patterns such as early and late sheets, crooked sheets, double sheets or package layers can be reliably detected as they arise and can be avoided.

Die für die beiden Transportwerkzeuge 12; 13 eines selben Typs, beispielsweise die Hubwerkzeuge 12, ermittelten Ergebnisse, hier also die aus den Druckverläufen z. B. der Hubsauger 12 ermittelten Merkmale A(S1); A(S2) bzw. Flächeninhalte A(S1); A(S2), können in einem Diagramm als Punktewolke dargestellt werden, zu der beispielsweise ein Schwerpunkt oder Zentrum Z berechnet wird. Über die Anwendung mathematisch statistischer Methoden, beispielsweise der Normalverteilung nach Gauß, auf die Verteilung der Werte des aus beiden Flächeninhalten A(S1); A(S2) kombinierten Merkmals A(S1, S2), lässt sich z. B. eine Vertrauensellipse konstruieren, innerhalb derer ein dem Vertrauenswert γ entsprechender Prozentsatz aller Punkte für die kombinierten Merkmale A(S1, S2) liegen. Als Vertrauenswerte γ kommt z. B. γ 96 in Betracht. Die Ellipse ermöglicht somit eine Aussage über die Zuverlässigkeit der Vereinzelung der Bogen 06 des Anlegers 01. Treten gehäuft Werte auf, die außerhalb dieser Ellipse liegen, wird dadurch frühzeitig auf ein Problem beim Vereinzeln der Bogen 06 aufmerksam gemacht. Der Bediener der be- oder verarbeitende Maschine kann also noch vor Auftreten eines Stoppers eingreifen und die Einstellungen korrigieren.For the two transport tools 12; 13 of the same type, for example the lifting tools 12, determined results, so here from the pressure curves z. B. the suction lifter 12 determined features A (S1); A(S2) or areas A(S1); A(S2) can be represented in a diagram as a cloud of points, for which, for example, a focus or center Z is calculated. About the application of mathematical-statistical methods, for example the normal distribution according to Gauss, on the distribution of the values of the two areas A(S1); A(S2) combined feature A(S1, S2), z. B. construct a confidence ellipse within which a percentage of all points for the combined features A(S1, S2) corresponding to the confidence value γ lie. As confidence values γ z. B. γ 96 into consideration. The ellipse thus enables a statement to be made about the reliability of the separation of the sheets 06 from the feeder 01. If there are frequent values that lie outside of this ellipse, this draws attention to a problem in the separation of the sheets 06 at an early stage. The operator of the machining or processing machine can therefore intervene and correct the settings even before a stopper occurs.

Die kombinierte bzw. verknüpfte Betrachtung der Ergebnisse für das charakteristische Merkmal A(S1); A(S2), hier die Flächeninhalte A(S1); A(S2) mehrerer Handhabungswerkzeuge 12; 13 kann zur Ableitung einer Fehlerart, z. B. aus Früh- oder Spätbogen, Schiefbogen, Doppelbogen oder Paketlagen, herangezogen werden.The combined or linked consideration of the results for the characteristic feature A(S1); A(S2), here the areas A(S1); A(S2) multiple handling tools 12; 13 can be used to derive an error type, e.g. B. from early or late sheets, skewed sheets, double sheets or package layers.

In Fortsetzung der die Vertrauensellipse betreffenden Konzeptes können Ergebnisse einer Messung an Handhabungswerkzeugen 13; 12 des anderen Typs, beispielsweise an Transportwerkzeugen 13, in einem dreidimensionalen Ellipsoid Berücksichtigung finden. Eine entsprechende Information über aufkommende Probleme kann dann über eine noch breitere Datenbasis erlangt werden.In continuation of the concept relating to the confidence ellipse, results of a measurement on handling tools 13; 12 of the other type, for example on transport tools 13, are taken into account in a three-dimensional ellipsoid. Corresponding information about upcoming problems can then be sent via a broader database can be obtained.

In einer o. g. besonders vorteilhafte Weiterbildung, wonach zur Automatisierung den Auswertemitteln 32 Steuerungsmittel 33, z. B. Datenverarbeitungsmittel 33 mit einer implementierten Steuerungslogik, zugeordnet sind, erfolgt eine Auswertung der Abweichungen vom Soll, z. B. eines zeitlichen Musters und/oder die Lage eines außerhalb des Vertrauensbereichs liegenden Punktes, datenverarbeitungsbasiert und die Einleitung einer Gegenmaßnahme, z. B. einer Lagekorrektur von Handhabungswerkzeugen 12; 13, insbesondere des die Handhabungswerkzeuge 12; 13 umfassenden Bogentrenner 14, automatisiert auf Basis des Ergebnisses o. g. Abweichungen bzw. automatisch auf die bevorstehenden Abweichungen. Der Bediener muss in diesem Fall nicht mehr oder zumindest nur noch im Notfall eingreifen. Auswertemittel 32 und Steuerungsmittel 33 können in einer selben Datenverarbeitungseinheit integriert oder räumlich getrennt und lediglich signaltechnisch verbunden sein.In one of the above particularly advantageous development, after which the evaluation means 32 control means 33, z. B. data processing means 33 are assigned with an implemented control logic, an evaluation of the deviations from the target, z. B. a temporal pattern and / or the location of an out-of-confidence point, based on data processing and the initiation of a countermeasure, e.g. B. a position correction of handling tools 12; 13, in particular of the handling tools 12; 13 comprehensive sheet separator 14, automated on the basis of the above result. Deviations or automatically to the upcoming deviations. In this case, the operator no longer has to intervene, or at least only in an emergency. Evaluation means 32 and control means 33 can be integrated in the same data processing unit or spatially separate and only connected in terms of signals.

Grundsätzlich unabhängig zu o. g. Weiterbildung mit einer Ermittlung und Auswertung eines Lastverlaufs und der Gewinnung eines die Bewertung von Lage und/oder Format der zuzuführenden Bogen 06 erlaubenden Merkmals A(S1); A(S2), in einer vorteilhaften Weiterbildung jedoch zusammen mit einer solchen, umfasst eine erfindungsgemäße und/oder besonders bevorzugte Ausführung eines Anlegers eine Sensorik mit mindestens einem Sensor S5, S6 auf der in Transportrichtung T der zuzuführenden Bogen 06 weisenden Seite, d. h. auf der Vorderseite des Stapels 09, und/oder mindestens einem Sensor S7, S8 auf der der Transportrichtung T entgengerichteten Seite, d. h. auf der Rückseite des Stapels 09, durch welchen ein Abstand oder - insbesondere zeitlicher Abstandsverlauf zu mindestens zwei quer zur Transportrichtung T zueinander beabstandeten - insbesondere auf einer selben Höhe befindlichen - Stellen auf der stromabwärtigen Seite des Stapels 09 ermittelbar ist oder zumindest Informationen zum Abstand bzw. Abstandsverlauf ermittelbar sind. Der jeweilige Sensor S5; S6; S7; S8 ist bevorzugt auf einer unterhalb der oberen Stapelkante liegenden Höhe angeordnet und/oder zumindest derart angeordnet, dass er auf eine unterhalb der oberen Stapelkante liegende Stelle des Stapels und/oder von der Vorder- oder Rückseite her auf die betreffende Stapelseite gerichtet ist.Basically independent of the above development with a determination and evaluation of a load profile and the acquisition of a feature A(S1) that allows the position and/or format of the sheets 06 to be fed to be evaluated; A(S2), but in an advantageous development together with such a development, an inventive and/or particularly preferred embodiment of a feeder comprises a sensor system with at least one sensor S5, S6 on the side pointing in the transport direction T of the sheets 06 to be fed, i.e. on the front side of stack 09, and/or at least one sensor S7, S8 on the side facing away from transport direction T, i.e. on the rear side of stack 09, through which a distance or - in particular the course of a distance over time - between at least two spaced apart transversely to transport direction T - in particular located at the same height - points on the downstream side of the stack 09 can be determined or at least information about the distance or distance profile can be determined. The respective sensor S5; S6; S7; S8 is preferably arranged at a level below the top edge of the stack and/or at least arranged in such a way that it is directed to a point on the stack below the top edge of the stack and/or from the front or rear to the side of the stack in question.

In einer hier nicht im Detail dargestellten Ausführungsvariante kann hierzu auf der Vorder- und/oder Rückseite ein als Laserscanner ausgebildeter Sensor S5; S6, S7; S8 vorgesehen sein, der auf zumindest einem Abschnitt der Stapelbreite punktuell an mehreren Stellen oder durchgängig einen Abstand oder - insbesondere zeitlichen - Abstandsverlauf zum Stapel abtastet oder zumindest Informationen zum Abstand bzw. Abstandsverlauf bereitstellt und den ermittelten Abstand bzw. die betreffenden Informationen auswertet. Damit lässt sich durch Auswertung an zumindest zwei voneinander beabstandeten und auf einer selben Höhe liegenden Stellen eine Information über die Ausrichtung der Stapelkante auf Höhe dieser Stellen ermitteln.In an embodiment variant that is not shown in detail here, a sensor S5 designed as a laser scanner; S6, S7; S8 can be provided, which scans a distance or - in particular temporal - distance progression to the stack selectively at several points or continuously on at least one section of the stack width or at least provides information on the distance or distance progression and evaluates the determined distance or the relevant information. In this way, information about the alignment of the stack edge at the level of these points can be determined by evaluating at least two points that are spaced apart from one another and are at the same height.

In einer hier dargestellten und mit einfachen Mitteln umzusetzenden Ausführung sind zwei Sensoren S5, S6, insbesondere Abstandssensoren S5; S6, auf der in Transportrichtung T der zuzuführenden Bogen 06 weisenden Seite, d. h. auf der Vorderseite des Stapels 09 vorgesehen, durch welche jeweils ein Abstand zu je einer - insbesondere auf einer selben Höhe befindlichen, Stelle auf der stromabwärtigen Seite des Stapels 09 messbar ist. Diese Sensoren S5; S6 sind quer zur Transportrichtung T zueinander beabstandet und bevorzugt auf einer selben Höhe und in einer selben senkrecht zur Transportrichtung T horizontal verlaufenden Flucht angeordneten Sensoren S5; S6 vorgesehen. Sie sind bevorzugt im Bereich von Vorderanschlägen 16 angeordnet. Die Sensoren S5; S6 sind bevorzugt auf einer unterhalb der oberen Stapelvorderkante liegenden Höhe angeordnet und/oder zumindest derart angeordnet, dass sie auf eine unterhalb der oberen Stapelvorderkante liegende Stelle des Stapels gerichtet sind. Sie sind beiderseits einer gedachten vertikal verlaufenden Mittelebene E angeordnet, die den Stapel 09 in Querrichtung betrachtet halbiert, können aber beispielsweise entsprechend dem zu verarbeitenden Bogenformat horizontal verschiebbar sein.In an embodiment shown here and to be implemented with simple means, two sensors S5, S6, in particular distance sensors S5; S6, on the side pointing in the transport direction T of the sheets 06 to be fed, i.e. on the front side of the stack 09, through which a distance from each point - in particular at the same height - on the downstream side of the stack 09 can be measured. These sensors S5; S6 are spaced apart from one another transversely to the transport direction T and are preferably arranged at the same height and in the same horizontal alignment perpendicular to the transport direction T; S6 provided. They are preferably arranged in the area of front stops 16 . The sensors S5; S6 are preferably arranged at a level below the upper front edge of the stack and/or at least arranged in such a way that they are directed to a point on the stack below the upper front edge of the stack. They are arranged on both sides of an imaginary vertical center plane E, which bisects the stack 09 viewed in the transverse direction, but can, for example, correspond to the processed sheet format to be moved horizontally.

Stattdessen oder bevorzugt zusätzlich zu den vorderseitigen Sensoren S5; S6 umfasst die Sensorik auf der gegenüberliegenden, also von der be- oder verarbeitende Maschine abgewandten Seite, d. h. Rückseite des Stapels 09 zwei Sensoren S7; S8, insbesondere Abstandssensoren S7; S8, durch welche jeweils ein Abstand zu je einer - insbesondere auf einer selben Höhe befindlichen - Stelle auf der Rückseite des Stapels 09 messbar ist. Die Sensoren S7; S8 sind ebenfalls quer zur Transportrichtung T zueinander beabstandet und bevorzugt auf einer selben Höhe und senkrecht zur Transportrichtung T horizontal verlaufenden Flucht vorgesehen sind. Die Sensoren S7; S8 sind bevorzugt auf einer unterhalb der oberen Stapelhinterkante liegenden Höhe angeordnet und/oder zumindest derart angeordnet, dass sie auf eine unterhalb der oberen Stapelhinterkante liegende Stelle des Stapels gerichtet sind. Sie sind beispielsweise in Säulen 36 eines Anlegergestells angeordnet, sodass die Zugänglichkeit zum Stapelwechsel nicht behindert wird.Instead of or preferably in addition to the front sensors S5; S6 includes the sensors on the opposite side, i.e. the side facing away from the processing machine, i. H. Rear of the stack 09 two sensors S7; S8, in particular distance sensors S7; S8, through which a distance to a point on the back of the stack 09 can be measured - in particular at the same height. The sensors S7; S8 are also spaced apart from one another transversely to the transport direction T and are preferably provided at the same height and perpendicular to the transport direction T horizontally aligned. The sensors S7; S8 are preferably arranged at a level below the upper rear edge of the stack and/or at least arranged in such a way that they are directed to a point on the stack that is below the upper rear edge of the stack. They are arranged, for example, in columns 36 of a feeder frame, so that accessibility for changing piles is not impeded.

Eine Abstandsmessung an Vorder- und/oder Rückseite zum Stapel 09 mittels der Sensoren S5; S6; S7; S8 wird im Betrieb während des Stapelhubes kontinuierlich oder intervallweise durchgeführt. Zur Erfassung des Stapelprofils eines im Anleger 01 befindlichen Stapels 09 werden die Messwerte an den zwei, bevorzugt vier Sensoren S5; S6; S7; S8 erhoben und ausgewertet. Dabei werden durch die vorder- und/oder rückseitigen Abstandssensoren S5; S6; S7; S8 auf der Vorder- und/oder Rückseite des Stapels 09 an zwei bzw. je zwei zueinander quer zur Transportrichtung T beabstandeten Stellen ein Profil für die seitliche Stapelbegrenzung in demjenigen Teil des Stapels 09 bereitgestellt, der oberhalb der betrachteten Stellen liegt und bereits vertikal über diese Stellen hinweggefördert wurdeA distance measurement on the front and/or rear of the stack 09 using the sensors S5; S6; S7; During operation, S8 is carried out continuously or at intervals during the stack stroke. In order to record the stack profile of a stack 09 located in the feeder 01, the measured values at the two, preferably four, sensors S5; S6; S7; S8 collected and evaluated. The front and/or rear distance sensors S5; S6; S7; S8 on the front and/or rear of the stack 09 at two or two locations spaced apart transversely to the direction of transport T, a profile for the lateral stack boundary is provided in that part of the stack 09 that lies above the locations under consideration and already vertically above them positions was promoted

Hierzu sind Auswertemittel 32' als Datenverarbeitungsmittel 32' dazu eingerichtet, den sich während des Nachführens, d. h. während des zum Erhalt der Lage der Stapeloberseite bei Entnahme der jeweils obersten Bogen 06 erfolgenden Anhebens, ergebende Verlauf der durch die mindestens zwei, bevorzugt vier Sensoren S5; S6; S7; S8 ermittelten Abstände aufzuzeichnen und deren Verläufe miteinander in Beziehung zu setzen und auszuwerten. Ergebnisse der Auswertung sind beispielsweise an ein Anzeigemittel 34' und/oder ein Steuerungsmittel 33', insbesondere mit entsprechend programmierten Datenverarbeitungsmittel 33' ausgebbar. In dieser Ausführung werden aus Abständen, insbesondere einem Verlauf von Abständen zwischen Sensoren S5; S6; S7; S8 und Stapel 09 die Lage und/oder Abmessung der Bogen 06 charakterisierende Kriterien abgeleitet. Bevorzugter Weise gelangen bei der Auswertung mathematisch statistische Methoden zur Anwendung.For this purpose, evaluation means 32' are set up as data processing means 32', which occurs during the tracking, ie during the time to obtain the position of the top of the stack when the uppermost sheet 06 is removed, resulting in the profile of the at least two, preferably four, sensors S5; S6; S7; S8 to record the distances determined and to relate and evaluate their courses to one another. Results of the evaluation can be output, for example, to a display means 34' and/or a control means 33', in particular with appropriately programmed data processing means 33'. In this embodiment, distances, in particular a course of distances between sensors S5; S6; S7; S8 and stack 09 criteria that characterize the position and/or dimensions of the sheets 06 are derived. Mathematical statistical methods are preferably used in the evaluation.

So lässt sich über die Messwerte der mindestens zwei, insbesondere vier Sensoren S5; S6; S7; S8 ein Profil des Stapels 09 - auf z. B. zumindest der durch Sensoren S5; S6; S7; S8 abgetasteten Seite - ermitteln, das Auskunft über die Länge und/oder die Lage ggf. bis hin zu einzelnen Bogen 06 gibt. Abweichungen in der Länge und/oder in der Lage der Bogen 06 können statistisch ausgewertet werden.The measured values of the at least two, in particular four, sensors S5; S6; S7; S8 a profile of the stack 09 - on z. B. at least by sensors S5; S6; S7; S8 scanned page - which provides information about the length and/or the position, possibly down to individual sheets 06. Deviations in the length and/or in the position of the sheets 06 can be evaluated statistically.

Die über die Zeit aufgenommenen Messwertereihen der beidseitig zur Mittelebene E angeordneten Sensoren S5; S6; S7; S8 stimmen in ihrem Verlauf - ggf. innerhalb zulässiger Fehlertoleranzen - überein, wenn die Bogen 06 im Stapel 09 richtig geschnitten wurden.The series of measured values recorded over time by the sensors S5; arranged on both sides of the center plane E; S6; S7; S8 match in their course - if necessary within permissible error tolerances - if the sheets 06 in the stack 09 were cut correctly.

Ergeben sich Differenzen in den jeweiligen Kurvenverläufen der Vorder- und Hinterseite, sind die Bogen 06 zu lang bzw. zu kurz. Beide Zustande sind für die Vereinzelung der Bogen 06 ungünstig.If there are differences in the respective curves on the front and back, the sheets 06 are too long or too short. Both states are unfavorable for the separation of the sheets 06.

In einer vorteilhaften Weiterbildung sind o. g. Steuerungsmittel 33' vorgesehen, durch welche eine derartige Abweichung in den Abmessungen, hier einer Längenabweichung von Bogen 06 aus den Messwerten erkannt wird und einer solchen über eine Veränderung in der Position und/oder Lage von Handhabungswerkzeugen 12; 13, insbesondere des die Handhabungswerkzeuge 12; 13 umfassenden Bogentrenners 14, beispielsweise durch Ansteuerung eines oder mehrerer entsprechender Antriebsmittel, in Weiterbildung automatisiert, entgegengewirkt wird, um so einem Fehler in der Vereinzelung vorbeugen.In an advantageous development, the above-mentioned control means 33' are provided, by means of which such a deviation in the dimensions, here a length deviation of sheet 06, is detected from the measured values and such a deviation via a change in the position and/or location of handling tools 12; 13, in particular of the handling tools 12; 13 comprehensive sheet separator 14, for example by controlling one or more corresponding drive means, automated in training, is counteracted in order to prevent an error in the separation.

Die Kenntnis der bespielweise über die Auswertung der vorder- und rückseitigen Entfernungsmesswerte ermittelbare bzw. ermittelte Länge der Bogen 06 kann auch für weitere Aggregate der be- oder verarbeitende Maschine nützlich sein und in deren Steuerung einfließen, wie z. B. an einer Bogenwendeeinrichtung und/oder an der Auslage.Knowledge of the length of sheets 06 that can be determined or has been determined, for example by evaluating the distance measurement values on the front and rear, can also be useful for other units of the processing machine and can be incorporated into its control, e.g. B. at a sheet turning device and / or at the delivery.

Sind die Messwertereihen der auf der einen und auf der anderen Seite der Mittelebene E liegenden Sensoren S5; S6; S7; S8 unterschiedlich, die Differenzen zwischen Vorder- und Hinterseite jedoch auf beiden Seiten gleich groß, deutet das auf schief liegende Bogen 06 im Stapel 09 hin. Solche Abweichungen in der Lage, also Schiefbogen, können daher ebenfalls frühzeitig erkannt und z. B. automatisiert durch ein Einstellen und/oder Positionieren des Bogentrenners 14 korrigiert werden.If the rows of measured values of the sensors S5; S6; S7; S8 are different, but the differences between the front and back sides are the same on both sides, this indicates that the sheet 06 in the stack 09 is crooked. Such deviations in position, i.e. oblique arcs, can therefore also be detected early and z. B. can be automatically corrected by adjusting and / or positioning the sheet separator 14.

Die kombinierte bzw. verknüpfte Betrachtung der Ergebnisse für das charakteristische Kriterium, hier der - insbesondere zeitliche - Abstandsverlauf an mehreren Stellen des Stapels 09 kann zur Ableitung einer Fehlerart, z. B. aus Früh- oder Spätbogen, Schiefbogen, Doppelbogen oder Paketlagen, herangezogen werdenThe combined or linked consideration of the results for the characteristic criterion, here the - in particular temporal - distance profile at several points of the stack 09 can be used to derive a type of error, e.g. B. from early or late sheets, skewed sheets, double sheets or package layers

Für die dargelegten Ausführungen der die Drucksensoren und/oder die Abstandssensoren umfassenden Sensorik mit zugeordneten Auswertemitteln 32; 32' sind vorzugweise o. g. Steuerungsmittel 33; 33' vorgesehen, welche in Signalverbindung zu den Auswertemitteln 32; 32' stehen und zu die ersten und/oder zweiten Handhabungsmittel 12; 13 mittel- oder unmittelbar stellenden Antriebsmitteln, um diese in Abhängigkeit vom Ergebnis der Auswertung zu positionieren. Dabei kann ein mittelbarer Antrieb dadurch erfolgen, dass der die Handhabungswerkzeuge 12; 13 umfassende Bogentrenner 14 gestellt bzw. positioniert wird.For the embodiments presented, the sensor system comprising the pressure sensors and/or the distance sensors with associated evaluation means 32; 32' are preferably the above control means 33; 33' is provided, which has a signal connection to the evaluation means 32; 32' and the first and/or second handling means 12; 13 directly or indirectly acting drive means to this depending on the result of to position the evaluation. In this case, an indirect drive can take place in that the handling tools 12; 13 comprehensive sheet separator 14 is provided or positioned.

BezugszeichenlisteReference List

0101
Anlegerinvestor
0202
Bändertisch, SaugbändertischBelt table, suction belt table
0303
Bogenanlagearch system
0404
Werk, Druckwerkwork, printing work
0505
Kante, hintereedge, rear
0606
Bogenbow
0707
Spaltgap
0808
--
0909
Stapel, BogenstapelStack, stack of sheets
1010
Stapeltischstacking table
1111
Hebeeinrichtunglifting device
1212
Werkzeug, Handhabungswerkzeug, Hubwerkzeug, Sauger, Trennsauger, HubsaugerTool, handling tool, lifting tool, suction cup, separating suction cup, lifting suction cup
1313
Werkzeug, Handhabungswerkzeug, Transportwerkzeugt, Sauger, TransportsaugerTool, handling tool, transport tool, sucker, transport sucker
1414
Bogentrennersheet separator
1515
Werkzeug, Tasterfußtool, tracer foot
1616
Vorderanschlagfront stop
1717
Bogenklappebow flap
1818
Klappenwelleflap shaft
1919
Blaseinrichtungblowing device
2020
Walze, Antriebswalzeroller, drive roller
2121
Walze, Umlenkwalzeroller, deflection roller
2222
Tischblechtable sheet
2323
Saugkastensuction box
2424
Transportbandconveyor belt
2525
--
2626
Anlegtischfeeding table
2727
Anschlagattack
2828
--
2929
Transfertrommelfalse drum
3030
GegendruckzylinderImpression cylinder
3131
Gummituchzylinderblanket cylinder
3232
Auswertemittel, Datenverarbeitungsmittelevaluation means, data processing means
32'32'
Auswertemittel, Datenverarbeitungsmittelevaluation means, data processing means
3333
Steuerungsmittel, Datenverarbeitungsmittelcontrol means, data processing means
33'33'
Steuerungsmittel, Datenverarbeitungsmittelcontrol means, data processing means
3434
Anzeigemitteldisplay means
34'34'
Anzeigemitteldisplay means
3535
--
3636
Säulepillar
A(S1)A(S1)
Merkmal, Flächeninhaltfeature, area
A(S2)A(S2)
Merkmal, Flächeninhaltfeature, area
A(S1, S2)A(S1, S2)
Merkmalfeature
EE
Mittelebenemidplane
M1M1
MittelwertAverage
M2M2
MittelwertAverage
P(S1)P(S1)
DruckPrint
P(S2)P(S2)
DruckPrint
P(S3)P(S3)
DruckPrint
P(S4)P(S4)
DruckPrint
S1S1
Sensor, Drucksensorsensor, pressure sensor
S2S2
Sensor, Drucksensorsensor, pressure sensor
S3S3
Sensor, Drucksensorsensor, pressure sensor
S4S4
Sensor, Drucksensorsensor, pressure sensor
S5S5
Sensor, AbstandssensorSensor, distance sensor
S6S6
Sensor, AbstandssensorSensor, distance sensor
S7S7
Sensor, AbstandssensorSensor, distance sensor
S8S8
Sensor, AbstandssensorSensor, distance sensor
TT
Transportrichtungtransport direction
ZZ
Zentrumcenter
γg
Vertrauenswerttrust value
γ(S1)γ(S1)
Vertrauenswerttrust value
γ(S2)γ(S2)
Vertrauenswerttrust value
φφ
Werkzeugphasenlagetool phasing

Claims (14)

  1. A feeder (01) for a sheet-processing machine, in which a stack (09) of sheets (06) to be processed can be received, having at least two first handling tools (12) spaced apart from each other transversely to a transport direction (T) of the sheets (06), by which a top sheet (06) of a stack (09) held in the feeder (01) can be removed from the stack (09) and/or having at least two second handling tools (13) spaced apart from each other transversely to a transport direction (T) of the sheets (06), by which a top sheet (06) removed from the stack (09) can be transported in the transport direction (T) away from the stack (09) to a transport path connecting downstream, characterized in that, a sensor system (S5, S6, S7, S8) is provided, which comprises one or more sensors (S5, S6) on the front side of the stack (09) facing in the transport direction (T) of the sheets (06) to be fed, by which information about a distance of at least two locations spaced apart from each other transversely to the transport direction (T) on the front side of the stack (09) can be determined, and/or that the sensor system (S5, S6, S7, S8) comprises one or more sensors (S5, S6) on the rear side of the stack (09) opposite to the transport direction (T), by which information about a distance of at least two locations spaced apart from each other transversely to the transport direction (T) on the rear side of the stack (09) can be determined.
  2. The feeder (01) according to claim 1, characterized in that, the sensor system (S5, S6, S7, S8) comprises two sensors (S5; S6) spaced apart from each other on the front side of the stack (09) facing in the transport direction (T) of the sheets (06) to be fed transversely to the transport direction (T) and configured as distance sensors (S5; S6), by which in each case a distance or distance curve to one of two locations spaced apart from each other transversely to the transport direction (T) on the downstream sides of the stack (09) can be determined, and/or that it comprises two sensors (S7; S8) spaced apart from each other transversely to the transport direction (T) on the rear side of the stack (09) opposite to the transport direction (T) and configured as distance sensors (S7; S8), by which in each case a distance or distance curve to one of two locations spaced apart from each other transversely to the transport direction (T) on the rear side of the stack (09) can be determined.
  3. The feeder (01) according to claim 1, characterized in that, the sensor system (S5, S6, S7, S8) comprises one sensor (S5; S7) configured as a laser scanner on the front side of the stack facing in the transport direction (T) of the sheets (06) to be fed and/or on the rear side of the stack (09) opposite to the transport direction (T) of the sheets (06) to be fed, by which information about a distance or a distance curve to at least two locations spaced apart from each other transversely to the transport direction (T) on the section lying between the locations can be determined.
  4. The feeder (01) according to claim 1, 2 or 3, characterized in that, evaluation means (32; 32') in signal connection to the sensor system (S1, S2, S3, S4, S5, S6, S7, S8) are provided, by which sheets (06) to be fed can be monitored for characterizing criteria obtained from the distances or information and the location and/or dimension of the sheets (06), can be evaluated for a deviation from a set point or set point range and results of the evaluation can be output via a signal connection for visualization to a display means (34; 34') and/or for correction to control means (33; 33').
  5. The feeder according to claim 1, 2, 3 or 4, characterized in that, the sensors (S5; S6; S7; S8) are arranged on a level lying below the upper stack edge and/or at least arranged such that they are directed toward a location of the stack (09) lying below the upper stack edge.
  6. The feeder according to claim 1, 2, 3, 4 or 5, characterized in that, the evaluation means (32') as data processing means (32') are set up to record the curve arising during the feeding of the stack (09) of the distances determined by the distance sensors (S5; S6; S7; S8) and to set and evaluate their curves in relation to each other.
  7. The feeder according to claim 1, 2, 3, 4, 5 or 6, characterized in that, the control means (33; 33') in signal connection to the evaluation means (32; 32') are in signal connection to the drive means directly or indirectly making available the first and/or second handling means (12; 13), in order to position them depending on the results of the evaluation.
  8. The feeder according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that, the two first and/or second handling tools (12; 13) are designed as suction members (12; 13) and that the sensor system (S1, S2, S3, S4, S5, S6, S7, S8) comprises sensors (S1; S2; S3: S4;) configured as pressure sensors (S1; S2; S3: S4;) respectively assigned to the first and/or second handling tools (12; 13), by which as a criterion characterizing positionally or dimensionally divergent sheets (06) a pressure curve pressure can be determined in the relevant handling tool (12; 13) or at a location of the conducting path assigned to the handling tool (12; 13), and that evaluation means (32) as data processing means (32) are set up to extract or form a feature (A(S1); (A(S2)) characteristic for the curve from the determined pressure curve using mathematical methods and to output it as a result to the display means and/or the control means (33).
  9. The feeder according to claim 8, characterized in that, the evaluation means (32) as data processing means (32) are set up to extract or form a feature (A(S1); (A(S2)) characteristic for the curve from the determined pressure curve using mathematical methods and to output it as a result to the display means and/or the control means (33).
  10. A method for sensing and/or correcting positionally and/or dimensionally divergent sheets (06) in a feeder of a sheet (06) processing machine, in particular using a device according to any of claims 1 to 6, wherein successively the respective uppermost sheets (06) of a stack (09) can be lifted by means of at least two first handling tools (12) spaced apart from each other transversely to a transport direction (T) of the sheets (06) and/or are transported in the transport direction (T) away from the stack (09) to a transport path connecting downstream by means of two second handling tools (13) spaced apart from each other transversely to a transport direction (T) of the sheets (06), characterized in that, by means of a sensor system (S1, S2, S3, S4; S5, S6, S7, S8) of the processing machine sheets (06) to be fed to the processing machine are monitored and evaluated for a position and/or dimension of the sheets (06) and the results of the evaluation are visualized and/or used for an automated correction, characterized in that, through the sensor system (S5, S6, S7, S8) by means of one or two sensors (S5; S6) spaced apart from each other transversely to the transport direction (T) a distance or distance curve or at least information about a distance or distance curve to two locations spaced apart from each other transversely to the transport direction (T) on the front side of the stack (09) in the transport direction (T) of the sheets (06) to be fed is determined and/or by means of one or two sensors (S7; S8) spaced apart from each other transversely to the transport direction (T) a distance or distance curve or at least information about a distance or distance curve to two locations spaced apart from each other transversely to the transport direction (T) on the rear side of the stack (09) opposite to the transport direction (T) is determined.
  11. The method according to claim 10, characterized in that, by means of two sensors (S5; S6) spaced apart from each other transversely to the transport direction (T) and configured as distance sensors (S5; S6) on the front side of the stack (09) facing in the transport direction (T) of the sheets (06) to be fed, in each case a distance or distance curve to one of two locations spaced apart from each other transversely to the transport direction (T) on the downstream side of the stack (09) is determined and/or by means of two sensors (S7; S8) spaced apart from each other transversely to the transport direction (T) and configured as distance sensors (S7; S8) on the rear side of the stack (09) averted from the transport path, in each case a distance or distance curve to one of two locations of the rear side of the stack (09) spaced apart from each other transversely to the transport direction (T) is measured.
  12. The method according to claim 10 or 11, characterized in that, results obtained via a plurality of sensors (S5; DS6; S7; S8) 12; 13) are linked and used for derivation and/or correction of an error type.
  13. The method according to claim 10, 11 or 12, characterized in that, a profile is provided by the front and rear-side distance sensors (S5; S6; S7; S8) on the front and rear side of the stack (09) at each of two locations space apart from each other transversely to the transport direction (T) for the lateral stack limitation of the part of the stack (09) which lies above the considered locations and has already been vertically conveyed away over these locations.
  14. The method according to claim 10, 11, 12 or 13, characterized in that, for the correction of an undesirable incorrect position or deviation a change in the position of one or more of the handling tools (12; 13) or of a sheet separator (14) comprising the handling tools (12; 13) occurs by controlling one or more drive means providing for positioning.
EP21729234.1A 2020-09-18 2021-05-21 Feeder of a sheet-processing machine and method for sensing and/or correcting positionally and/or dimensionally divergent sheets in a feeder of a sheet-processing machine Active EP4021834B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020124432.0A DE102020124432B4 (en) 2020-09-18 2020-09-18 Feeder of a sheet processing machine and method for detecting and/or correcting sheets that differ in position and/or dimensions in a feeder of a sheet processing machine
PCT/EP2021/063611 WO2022058058A1 (en) 2020-09-18 2021-05-21 Feeder of a sheet-processing machine and method for sensing and/or correcting positionally and/or dimensionally divergent sheets in a feeder of a sheet-processing machine

Publications (2)

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EP4021834A1 EP4021834A1 (en) 2022-07-06
EP4021834B1 true EP4021834B1 (en) 2022-10-19

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EP21729234.1A Active EP4021834B1 (en) 2020-09-18 2021-05-21 Feeder of a sheet-processing machine and method for sensing and/or correcting positionally and/or dimensionally divergent sheets in a feeder of a sheet-processing machine

Country Status (6)

Country Link
US (1) US11685621B2 (en)
EP (1) EP4021834B1 (en)
JP (1) JP7447157B2 (en)
CN (1) CN114555494B (en)
DE (1) DE102020124432B4 (en)
WO (1) WO2022058058A1 (en)

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* Cited by examiner, † Cited by third party
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JPS5661248A (en) * 1979-10-17 1981-05-26 Toppan Printing Co Ltd Paper feed abnormality sensor for printer
JPS60119045U (en) * 1984-01-19 1985-08-12 凸版印刷株式会社 Automatic conveyor for thin plates
JPS6160533A (en) * 1984-08-31 1986-03-28 Fuji Xerox Co Ltd Sheet detector of copying machine
DE3907037C2 (en) 1989-03-04 1994-03-24 Heidelberger Druckmasch Ag Device for interrogating the length of a sheet in a sheet-processing machine
US5803447A (en) * 1996-09-25 1998-09-08 D&K Custom Machine Design, Inc. Method and apparatus for feeding sheets
DE19917405B4 (en) * 1999-04-16 2005-04-14 LTG Mailänder GmbH & Co. KG Method and device for separating flexible flat objects
DE10100191C2 (en) 2001-01-04 2003-10-09 Koenig & Bauer Ag sheet feeder
DE10151484B4 (en) 2001-10-18 2005-07-28 Man Roland Druckmaschinen Ag sheet feeder
DE102004005575A1 (en) 2003-03-03 2004-09-16 Heidelberger Druckmaschinen Ag Method for control of sheet feed in printer has abutment for front edge of stack with edge stop moved cyclically out of feed direction of stack
DE10356107B4 (en) 2003-11-27 2021-05-27 Mabeg Systems Gmbh Sheet feeder with leading edge separation and contactless stack scanning
US7411205B2 (en) * 2005-03-04 2008-08-12 Xerox Corporation In-stack sheet thickness measuring system
SE530098C2 (en) 2006-07-19 2008-03-04 Xerex Ab Method and apparatus thereby generating and adding to a sheet in a sheet-fed printing press an air pressure separate from atmospheric pressure is distributed to effect or affect the sheet's transport in the printing press
DE102015204558B4 (en) 2015-03-13 2018-04-05 Koenig & Bauer Ag Device for aligning sheets
JP2018065647A (en) 2016-10-19 2018-04-26 三菱製紙株式会社 Sheet feeding unit of sheet-fed printing press
JP2019059582A (en) 2017-09-26 2019-04-18 三菱製紙株式会社 Paper feeding part of sheet-fed printer

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Publication number Publication date
US11685621B2 (en) 2023-06-27
CN114555494A (en) 2022-05-27
DE102020124432A1 (en) 2022-03-24
WO2022058058A1 (en) 2022-03-24
CN114555494B (en) 2024-01-09
DE102020124432B4 (en) 2022-07-07
JP2023513986A (en) 2023-04-05
US20220348430A1 (en) 2022-11-03
EP4021834A1 (en) 2022-07-06
JP7447157B2 (en) 2024-03-11

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