EP0799783B1 - Control device for driving the pile elevator of a sheet-processing machine - Google Patents

Control device for driving the pile elevator of a sheet-processing machine Download PDF

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Publication number
EP0799783B1
EP0799783B1 EP97104449A EP97104449A EP0799783B1 EP 0799783 B1 EP0799783 B1 EP 0799783B1 EP 97104449 A EP97104449 A EP 97104449A EP 97104449 A EP97104449 A EP 97104449A EP 0799783 B1 EP0799783 B1 EP 0799783B1
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EP
European Patent Office
Prior art keywords
stack
drive motor
carrier plate
support plate
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97104449A
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German (de)
French (fr)
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EP0799783A3 (en
EP0799783A2 (en
Inventor
Horst Klingler
Christian Schlegel
Hartmut Leichnitz
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Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Publication of EP0799783A2 publication Critical patent/EP0799783A2/en
Publication of EP0799783A3 publication Critical patent/EP0799783A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/08—Supports 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
    • B65H1/14—Supports 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/15—Height, e.g. of stack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/51—Encoders, e.g. linear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a control for the stack stroke drive of a sheet processing Printing machine, in particular for feeders and / or delivery of a sheet-fed offset printing machine, according to the preamble of claim 1.
  • the sheets to be printed are from the top taken from a stack of sheets, over a system table to a system and from there one first printing unit fed.
  • the printed sheets are in the delivery on the top of a stack of sheets filed in the work cycle of the machine.
  • the stack of feeders or booms load-bearing stack support plates are in this case by assigned stack lifting drives Feeder or boom can be moved in height.
  • the stack support plate is moved such that the top of the sheet stack in one intended height range remains.
  • the stack support plate of the Stack of sheets in the delivery here also according to the signals of the stack height scanning the control assigned to the motor of the stack lifting drive is the lowering of the Stack support plate causes.
  • the stack support plates in the feeder and delivery of sheetfed offset presses must but not only the tracking movement described above during printing but especially for a manual or automatic batch change (Non-stop operation) within larger areas.
  • the stack support plate must be used when changing the stack manually or when placing a new pallet to be completely lowered to the ground.
  • additional positioning operations of the stack support plate must also be carried out, in particular to combine the main stack with the auxiliary or residual stack.
  • DE 4 207 305 A1 describes a device for controlling the stack carrier in printing machines known, here the stack carrier with an electrical displacement measuring device for constant detection of its position and for the transmission of measurement data to a programmable Computer connected to determine the vertical position of the stack carrier is.
  • a distance measuring device is used, for example, along the guidance of the stack carrier arranged measuring strips proposed in connection with a scanner.
  • Another embodiment of the device described is a via a reduction gear rotary potentiometer connected to the drive motor of the stack carrier provided, the analog measuring voltage with respect to the position of the stack carrier can be further processed is.
  • DE 3 631 456 C2 describes a device for controlling a stack lifting device known in which the control of the stack lifting device is a device in the form an impulse or incremental encoder to determine one dependent on the tracking path Size and a clock for generating information about the working speed is assigned to the machine.
  • This device described in this document serves in connection with a double sheet control of the adjustment of the tracking movements of the sheet stack to the work cycle of the machine depending on the substrate thickness.
  • a stack lifting device as a brushless one Drive DC motor trained drive motor.
  • the brushless DC motor is used for loading and unloading as a DC motor Self commutation and during the printing process in a second mode of operation Stepper motor operated with external commutation. This allows you to change stacks Achieve higher travel speeds, however, especially for reasons of personal protection additional security measures required.
  • DE 9 202 352 U1 is a safeguard for a stack lifting device for sheet stacks known in sheet-fed printing machines, in which a switching of the stack travel speed between a high and a low value by at least one in two switching stages switchable switching element, which with the stack support plate or with the top of the sheet stack cooperates, is actuated.
  • the stack support plate can first be moved at high speed, after which a first actuation of the switching element described to a lower speed is switched to the subsequent approximation with higher accuracy achieve.
  • a disadvantage of this device is the mechanical effort in particular the switching device described.
  • the object of the present invention is therefore to provide a control for the stacking stroke drive according to the preamble of claim 1, so that while avoiding the above-mentioned disadvantages, a flexible control option for a stack lift drive can be achieved, in particular the strict requirements of personal protection must be feasible.
  • the controller switches the travel speed for the drive motor of the stacking stroke drive to a lower speed value, so that in the case of Operating an electrical safety device (e.g. an operator's foot between the floor and stack support plate) the movement of the stack support plate by stopping the drive motor is stopped as quickly as possible and without slowing down caused by inertia.
  • an electrical safety device e.g. an operator's foot between the floor and stack support plate
  • the movement of the stack support plate during an automatic stack change in non-stop operation is the travel speed for the stack support plate by the invention trained control specified depending on the position of the stack support plate.
  • the measuring device for detecting the Position of the stack support plate and for deriving information about the speed the method of the stack support plate as a via a reduction gear with the drive motor the stack lifting device coupled angle encoder.
  • This angle encoder are absolute angular values over a number of lines in the manner of a parallel bus Removable, so that digital information is already available with each switch-on about the position of the stack support plate. It is intended that the reduction of the reduction gear between the drive motor and the angle encoder is such that the entire travel range of the stack support plate between the floor and the maximum maps possible travel height to an area ⁇ 360 ° of the rotor of the angle encoder.
  • one of the Evaluation unit arranged downstream of the angle encoder especially after installation of the angle encoder, the current position of the stack support plate is entered once (e.g. via Hand terminal or laptop), from which a calibration of the angle values of the angle encoder is then obtained to the entered reference value. It is therefore not necessary to use the angle encoder after exchange of gear parts or other measures in the stacking stroke drive mechanically to adjust.
  • the angle encoder supplying absolute angle values it is possible to add the least significant bit of the angle value information, in particular in conjunction with higher-value bits, permanent for determining the speed evaluate the stack support plate during operation of the drive motor. Anytime there is therefore one or two evaluation units downstream of the angle encoder digital information about the current (vertical) position of the stack support plate as well as about their travel speed. According to a further development according to the invention, that in addition to the controller evaluating the position information of the angle encoder additional monitoring device is provided along with another evaluation unit, which a deviation in the travel speed of the stack support plate is additionally detected and by which when the maximum permissible speed is exceeded the The drive motor of the stacking stroke drive is immediately stopped and a mechanical brake is engaged becomes.
  • the chains 3 are in operative connection with a drivable Sprocket shaft 4, this via a gear 5 with a drive motor 6 is coupled.
  • An electrically releasable brake is also assigned to the drive motor 6, which is not shown in the figure, and in particular manages that at Switch off the power or other emergency or dangerous situations the stack support plate 1 can be locked in the respective position.
  • the drive motor 6, in particular as a brushless DC motor with a corresponding Electronic commutation is trained, for example, directly on the shaft and a reduction gear 8 connected to an absolute encoder 9.
  • the reduction of the reduction gear 8 for coupling the angle encoder 9 is such that the entire travel of the stack support plate 1 in particular between the floor and a maximum attainable upper position within a feeder or boom does not quite cause one rotation of the rotor of the angle encoder 9.
  • a method of the stack support plate 1 between the floor and indicated in the figure A maximum attainable upper position means that the digital values of the Angle encoder always different and the position of the stack support plate 1 clearly reproducing Accept values.
  • the angle encoder is 9 connected directly to the shaft of the drive motor 6 via the reduction gear.
  • the reduction gear 8 can also be indicated with the gear 5 of the sprocket shaft 4 or be attached to the sprocket shaft 4. According to the invention it is crucial that the total travel of the stack support plate 1 is less than one revolution of the angle encoder 9 or that the entire travel of the Stack support plate 1 maps to an area ⁇ 360 ° of the rotor of the angle encoder 9.
  • the angle encoder 9 is designed as an absolute angle encoder, i.e. this are on a number of lines providing binary signals or in the form of a serial Data flow immediately after switching on the devices its rotor position (encoder disc) corresponding digital signals can be removed.
  • the angle encoder 9 is followed by two Evaluation units 10.1, 10.2 connected, via which after entering a reference value the current vertical position of the stack support plate 1 within the feeder or boom can be determined.
  • the reference value entered is assigned to the at the input of the currently applied digital angle value, so that now all positions (Positions) of the stack support plate 1 in the feeder / delivery by specifying a digital Angular values can be determined and approached.
  • the evaluation units 10.1, 10.2 which the digital signals of the angle encoder 9 correspond to those made above Data to be converted are operatively connected to a controller 7, via which, according to the position signals, energizing the drive motor 6 for Approaching predetermined positions of the stack support plate 1 takes place, and on the other hand with one Monitoring device 12, through which a determination of the maximum allowed Travel speed as a function of the position signals of the angle encoder 9 and a Comparison with the current travel speed is carried out.
  • the controller is also capable 7 not only perform position control for moving to predetermined positions, but also the travel speed depending on the respective position of the To control the stack support plate 1 by appropriately energizing the drive motor 6.
  • the controller 7 receives the digital position signal of the position of the stack support plate 1 via the evaluation unit 10.1. Furthermore, in the evaluation unit 10.1, the travel speed of the stack support plate 1 is determined from the signals of the angle encoder 9 and compared with the maximum values defined in the controller 7 as a function of position. Permissible maximum speeds are stored in the controller 7 for various commands, to which these can be fed via an input device 11, which are activated depending on the position signals of the angle encoder 9 for moving the stack support plate 1 depending on the respective command. In order to lower the stack support plate 1, for example activated by hand via the input device 11, the stack support plate 1 is first lowered at a first speed V max1 until the stack support plate has reached an intended height above the floor.
  • the controller 7 then switches over to a second travel speed V max2, by means of which the stack support plate 1 is lowered completely onto the sheet via the drive motor. It applies here that a lower speed is selected for moving to the end position than the travel speed above the minimum height for lowering the stack support plate 1. V max2 ⁇ V max1 therefore applies .
  • the maximum speeds stored in the controller 7 for a multiplicity of operating commands which on the one hand can be entered manually via the input device 11 or are triggered by the higher-level control of the machine, are assigned to specific position ranges, ie these position ranges are parameterized with different travel speeds. These assignments are also stored in the evaluation units 10.1, 10.2.
  • the above-described lowering of the stack support plate 1 by switching a travel speed from V max1 to V max2 corresponding to the position of the stack support plate achieved by evaluating the signals of the angle transmitter 9 in connection with the downstream evaluation unit 10.1 is only exemplary, in particular, this is also how travel processes are carried out Stack support plate 1, for example during an automatic stack change in non-stop operation to combine the remaining or auxiliary stack. It is essential that the control unit 7 stores speed setpoints for the position signals that can be detected by the evaluation unit 10.1, depending on the drive motor 6, the stack support plate 1 is moved at the respectively provided travel speed.
  • the corresponding switches are the Travel speed of the stack support plate 1 can be carried out automatically without being in the travel path the stack support plate 1 additional shift levers, sensors or the like are to be provided.
  • FIG. 1 also shows the monitoring device already mentioned above 12, which via the evaluation unit 10.2 with the angle encoder 9 for position detection the stack support plate 1 is connected. Like the controller 7 (from the evaluation unit 10.1) also receives the monitoring device 12 from the evaluation unit 10.2 via a Line Vü a signal when the travel speed of the stack support plate 1 exceeds the position-dependent maximum value. In this case, the drive motor 6 stopped by the monitoring device 12.
  • the evaluation units 10.1, 10.2 are preferably once as a programmed processor and once designed as a hardware assembly and each serve to convert the Digital signals from the angle encoder 9 in from the controller 7 or the monitoring device 12 usable position values (signal Pos in Fig. 1).
  • the evaluation units 10.1, 10.2 are also the actual values of the traversing speed from the encoder signals the stack support plate 1 formed (evaluation of the pulse sequence of the least significant bit of the Angle encoder 9) and compared with the stored maximum values.
  • About accordingly formed signals on the lines Vü takes place when the predetermined Maximum values for stopping the drive motor 6 via the controller 7 and the monitoring device 12.
  • the monitoring device 12 can also be shown in FIG Way with an electromagnetically actuated assigned to the drive motor 6 Brake connected and this when a speed deviation is detected press immediately.

Landscapes

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

Abstract

The height of the stack at the loading or unloading station is governed by a hoisted stack platform driven by an electric motor which also positions a sensing arrangement in turn controlling the rate of travel of the platform. A platform carrier (1), supporting the stack of sheets (2), is lifted and lowered by means of chains (3) wound on a drum (4) rotated in either direction by a motor (6) and gearbox (5). Another gearbox (8) turns an angular position sensor (9) connected to a pair of analyzer units (10.1,10.2). An input control unit (11) sends signals to the motor control unit (7) and a monitor unit (12) which together control the rotation of the drive motor.

Description

Die Erfindung betrifft eine Steuerung für den Stapelhubantrieb einer bogenverarbeitenden Druckmaschine, insbesondere für Anleger und/oder Ausleger einer Bogenoffsetdruckmaschine, gemäß dem Oberbegriffvon Anspruch 1.The invention relates to a control for the stack stroke drive of a sheet processing Printing machine, in particular for feeders and / or delivery of a sheet-fed offset printing machine, according to the preamble of claim 1.

Bei Bogenoffsetdruckmaschinen werden die zu bedruckenden Bogen von der Oberseite eines Bogenstapels entnommen, über einen Anlagetisch zu einer Anlage und von dort einem ersten Druckwerk zugeführt. Die bedruckten Bogen werden in der Auslage auf der Oberseite eines Bogenstapels im Arbeitstakt der Maschine abgelegt. Die den Anleger- bzw. Auslegerstapel tragenden Stapeltragplatten sind dabei durch zugeordnete Stapelhubantriebe im Anleger bzw. Ausleger höhenbeweglich gelagert. Insbesondere sind mit der Oberseite des Bogenstapels zusammenwirkende Tasteinrichtungen vorgesehen, vermittels der im Anleger die Stapeltragplatte derartig verfahren wird, so daß die Oberseite des Bogenstapels in einem vorgesehenen Höhenbereich verbleibt. Analog erfolgt das Absenken der Stapeltragplatte des Bogenstapels im Ausleger, wobei auch hier entsprechend den Signalen der Stapelhöhenabtastung die dem Motor des Stapelhubantriebes zugeordnete Steuerung das Absenken der Stapeltragplatte veranlaßt.In sheetfed offset presses, the sheets to be printed are from the top taken from a stack of sheets, over a system table to a system and from there one first printing unit fed. The printed sheets are in the delivery on the top of a stack of sheets filed in the work cycle of the machine. The stack of feeders or booms load-bearing stack support plates are in this case by assigned stack lifting drives Feeder or boom can be moved in height. In particular, with the top of the Interacting touch devices provided by means of the sheet stack in the feeder the stack support plate is moved such that the top of the sheet stack in one intended height range remains. The stack support plate of the Stack of sheets in the delivery, here also according to the signals of the stack height scanning the control assigned to the motor of the stack lifting drive is the lowering of the Stack support plate causes.

Die Stapeltragplatten im Anleger und Ausleger von Bogenoffsetdruckmaschinen müssen jedoch nicht nur die voranstehend beschriebene Nachführbewegung während des Druckbetriebes ausführen sondern insbesondere für einen manuellen oder automatischen Stapelwechsel (Non-Stop-Betrieb) innerhalb größerer Bereiche verfahren werden. Insbesondere muß beim manuellen Wechseln des Stapels bzw. zum Aufsetzen einer neuen Palette die Stapeltragplatte ganz auf den Boden herabgefahren werden. Bei Bogenoffsetdruckmaschinen mit Einrichtungen im An- und Ausleger zum halb- bzw. vollautomatischen Stapelwechsel (Non-Stop-Betrieb) sind ferner zusätzliche Positioniervorgänge der Stapeltragplatte auszuführen, um insbesondere den Haupt- mit dem Hilfs- bzw. Reststapel zu vereinigen. Neben den voranstehend beschriebenen Verfahrvorgängen der Stapeltragplatten sind durch die dem Stapelhubantrieb zugeordnete Steuerung noch dem Personenschutz dienende Funktion zu erfüllen. So muß stets gewährleistet sein, daß insbesondere beim Absenken der Stapeltragplatte eine Personengefährdung ausgeschlossen ist, insbesondere dann, wenn beispielsweise der Fuß einer Bedienperson zwischen Stapeltragplatte und dem Boden gerät. Dazu sind zusätzliche Absicherungen vorgesehen, welche beispielsweise in Form von Lichtschranken bzw. durch Auslenkung aktivierbare Endschalter über die Steuerung den Stapelhubantrieb sofort stillsetzen. So ergibt sich für die Steuerung eines Stapelhubantriebes in bestimmten Betriebssituationen die Anforderung höchster Positioniergenauigkeit und in bestimmten Betriebssituationen die Forderung nach schnellstmöglichen Verfahren der Stapeltragplatte.The stack support plates in the feeder and delivery of sheetfed offset presses must but not only the tracking movement described above during printing but especially for a manual or automatic batch change (Non-stop operation) within larger areas. In particular the stack support plate must be used when changing the stack manually or when placing a new pallet to be completely lowered to the ground. In sheetfed offset presses with devices in the feeder and delivery for semi or fully automatic stack changing (Non-stop operation), additional positioning operations of the stack support plate must also be carried out, in particular to combine the main stack with the auxiliary or residual stack. Next The above-described processes of the stack support plates are due to the Control assigned to the stacking lift drive also serves the function of protecting people fulfill. So it must always be ensured that especially when lowering the stack support plate a risk to persons is excluded, especially if, for example an operator's foot gets between the stack support plate and the floor. To do this additional safeguards are provided, for example in the form of light barriers or limit switches that can be activated by deflection via the control of the stacking stroke drive stop immediately. This results in the control of a stack lift drive in certain Operating situations require the highest positioning accuracy and in certain Operating situations, the demand for the fastest possible movement of the stack support plate.

Aus der DE 4 207 305 Al ist eine Vorrichtung zur Steuerung des Stapelträgers in Druckmaschinen bekannt, wobei hier der Stapelträger mit einer elektrischen Wegmeßeinrichtung zur ständigen Erfassung seiner Position und zur Übermittlung von Meßdaten an einen programmierbaren Rechner zwecks Bestimmung der Vertikalposition des Stapelträgers verbunden ist. Als Wegmeßeinrichtung wird beispielsweise ein entlang der Führung des Stapelträgers angeordneter Meßstreifen in Verbindung mit einem Abtaster vorgeschlagen. Gemäß einer anderen Ausführungsform der beschriebenen Einrichtung ist ein über ein Untersetzungsgetriebe mit dem Antriebsmotor des Stapelträgers verbundenes Drehpotentiometer vorgesehen, dessen analoge Meßspannung hinsichtlich der Position des Stapelträgers weiterverarbeitbar ist. Eine derartige Positionserfassung des Stapelträgers ermöglicht das exakte Positionieren des Stapelträgers, jedoch sind zusätzliche Maßnahmen erforderlich, um insbesondere die Fahrgeschwindigkeit des Stapelträgers aus den analogen Meßwerten insbesondere des Drehpoti zu ermitteln. Ferner nennt es bereits diese Schrift als nachteilig, daß bei Verwendung eines Drehpotis bei Wechsel dieses Bauteiles bzw. bei Wechsel des Getriebes, von Getriebeteilen oder beim Tausch der Ketten das Drehpotentiometer stets neu eingestellt werden muß, um einen Bezug zwischen der Position des Stapelträgers und der Stellung des Rotors des Drehpotentiometers zu erzielen. DE 4 207 305 A1 describes a device for controlling the stack carrier in printing machines known, here the stack carrier with an electrical displacement measuring device for constant detection of its position and for the transmission of measurement data to a programmable Computer connected to determine the vertical position of the stack carrier is. A distance measuring device is used, for example, along the guidance of the stack carrier arranged measuring strips proposed in connection with a scanner. According to Another embodiment of the device described is a via a reduction gear rotary potentiometer connected to the drive motor of the stack carrier provided, the analog measuring voltage with respect to the position of the stack carrier can be further processed is. Such a position detection of the stack carrier enables the exact Position the stack carrier, however, additional measures are required to in particular the driving speed of the stack carrier from the analog measured values in particular of the rotary potentiometer. Furthermore, this document already mentions the disadvantage that when using a rotary potentiometer when changing this component or when changing the gear, gearbox parts or when replacing the chains, the rotary potentiometer must always be reset must be in order to establish a relationship between the position of the stack carrier and the To achieve the position of the rotor of the rotary potentiometer.

Aus der DE 3 631 456 C2 ist eine Einrichtung zum Steuern einer Stapelhebevorrichtung bekannt, bei welcher der Steuerung der Stapelhebevorrichtung eine Vorrichtung in Form eines Impuls- bzw. Inkrementalgebers zum Ermitteln einer vom Nachführweg abhängigen Größe und ein Taktgeber zum Erzeugen einer Information über die Arbeitsgeschwindigkeit der Maschine zugeordnet ist. Diese in dieser Schrift beschriebene Einrichtung dient dabei in Verbindung mit einer Doppelbogenkontrolle der Anpassung der Nachführbewegungen des Bogenstapels an den Arbeitstakt der Maschine in Abhängigkeit der Bedruckstoffstärke.DE 3 631 456 C2 describes a device for controlling a stack lifting device known in which the control of the stack lifting device is a device in the form an impulse or incremental encoder to determine one dependent on the tracking path Size and a clock for generating information about the working speed is assigned to the machine. This device described in this document serves in connection with a double sheet control of the adjustment of the tracking movements of the sheet stack to the work cycle of the machine depending on the substrate thickness.

Aus der DE 4 228 664 C2 ist es bekannt, eine Stapelhubeinrichtung über einen als bürstenlosen Gleichstrommotor ausgebildeten Antriebsmotor anzutreiben. Der bürstenlose Gleichstrommotor wird dabei zum Be- und Entladen als Gleichstrommotor mit Selbstkommutierung und während des Druckprozesses in einer zweiten Betriebsart als Schrittmotor mit Fremdkommutierung betrieben. Dadurch lassen sich beim Stapelwechsel höhere Verfahrgeschwindigkeiten erzielen, jedoch sind insbesondere aus Gründen des Personenschutzes zusätzliche Absicherungsmaßnahmen erforderlich.From DE 4 228 664 C2 it is known to use a stack lifting device as a brushless one Drive DC motor trained drive motor. The brushless DC motor is used for loading and unloading as a DC motor Self commutation and during the printing process in a second mode of operation Stepper motor operated with external commutation. This allows you to change stacks Achieve higher travel speeds, however, especially for reasons of personal protection additional security measures required.

Aus der DE 9 202 352 U1 ist eine Absicherung einer Stapelhubvorrichtung für Bogenstapel in Bogendruckmaschinen bekannt, bei welcher ein Umschalten der Stapelverfahrgeschwindigkeit zwischen einem hohen und niederen Wert dadurch erfolgt, in dem ein in wenigstens zwei Schaltstufen verbringbares Schaltelement, welches mit der Stapeltragplatte bzw. mit der Oberseite des Bogenstapels zusammenwirkt, betätigbar ist. Durch diese Einrichtung ist die Stapeltragplatte zunächst mit einer hohen Geschwindigkeit verfahrbar, woraufhin nach einer ersten Betätigung des beschriebenen Schaltelementes auf eine niedrigere Geschwindigkeit umgeschaltet wird, um die darauf folgende Annäherung mit höherer Genauigkeit zu erzielen. Nachteilig bei dieser Einrichtung ist jedoch der insbesondere mechanische Aufwand der beschriebenen Schaltvorrichtung.DE 9 202 352 U1 is a safeguard for a stack lifting device for sheet stacks known in sheet-fed printing machines, in which a switching of the stack travel speed between a high and a low value by at least one in two switching stages switchable switching element, which with the stack support plate or with the top of the sheet stack cooperates, is actuated. Through this facility is the stack support plate can first be moved at high speed, after which a first actuation of the switching element described to a lower speed is switched to the subsequent approximation with higher accuracy achieve. A disadvantage of this device, however, is the mechanical effort in particular the switching device described.

Aufgabe der vorliegenden Erfindung ist es daher, eine Steuerung für den Stapelhubantrieb gemäß dem Oberbegriffvon Anspruch 1 derartig weiterzubilden, so daß unter Vermeidung der voranstehend genannten Nachteile eine flexible Steuerungsmöglichkeit für einen Stapelhubantrieb erzielbar ist, wobei insbesondere die strengen Anforderungen des Personenschutzes erfüllbar sein müssen.The object of the present invention is therefore to provide a control for the stacking stroke drive according to the preamble of claim 1, so that while avoiding the above-mentioned disadvantages, a flexible control option for a stack lift drive can be achieved, in particular the strict requirements of personal protection must be feasible.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This problem is solved by the characterizing features of claim 1. Further training the invention emerge from the subclaims.

Gemäß der Erfindung ist vorgesehen, daß in der dem Antriebsmotor des Stapelhubantriebes zugeordneten Steuerung in Abhängigkeit des vorgegebenen Verfahrkommandos die Geschwindigkeit zum Verfahren der Stapeltragplatte als Funktion der erfaßten Position gewählt und über den Antriebsmotor zur Ausführung gebracht wird. Demzufolge ist es möglich, insbesondere beim Absenken der Stapeltragplatte zunächst eine hohe Geschwindigkeit vorzugeben, bis die Stapeltragplatte eine vorgegebene Wegstrecke oberhalb des Bodens einnimmt. Sodann schaltet die Steuerung die Verfahrgeschwindigkeit für den Antriebsmotor des Stapelhubantriebes auf einen geringeren Geschwindigkeitswert um, so daß im Falle des Betätigens einer elektrischen Absicherung (z.B. Fuß einer Bedienperson zwischen Boden und Stapeltragplatte) die Bewegung der Stapeltragplatte durch Stillsetzen des Antriebsmotors schnellstmöglich und ohne durch Trägheit hervorgerufenes Nachlaufen gestoppt wird. Auch das Verfahren der Stapeltragplatte bei einem automatischen Stapelwechsel im Non-Stop-Betrieb wird die Verfahrgeschwindigkeit für die Stapeltragplatte durch die erfindungsgemäß ausgebildete Steuerung in Abhängigkeit der Position der Stapeltragplatte vorgegeben.According to the invention it is provided that in the drive motor of the stacking stroke drive assigned control depending on the specified travel command the speed chosen to move the stack support plate as a function of the detected position and is carried out via the drive motor. As a result, it is possible especially when lowering the stack support plate, first a high speed to specify until the stack support plate a predetermined distance above the ground occupies. The controller then switches the travel speed for the drive motor of the stacking stroke drive to a lower speed value, so that in the case of Operating an electrical safety device (e.g. an operator's foot between the floor and stack support plate) the movement of the stack support plate by stopping the drive motor is stopped as quickly as possible and without slowing down caused by inertia. Also the movement of the stack support plate during an automatic stack change in non-stop operation is the travel speed for the stack support plate by the invention trained control specified depending on the position of the stack support plate.

Gemäß einer Ausführungsform der Erfindung ist die Meßeinrichtung zur Erfassung der Position der Stapeltragplatte und zur Ableitung einer Information über die Geschwindigkeit des Verfahrens der Stapeltragplatte als ein über ein Untersetzungsgetriebe mit dem Antriebsmotor der Stapelhubeinrichtung gekoppelter Winkelgeber ausgebildet. Diesem Winkelgeber sind über eine Anzahl von Leitungen absolute Winkelwerte nach Art eines Parallelbuses entnehmbar, so daß bei jedem Einschaltvorgang bereits eine digitale Information über die Position der Stapeltragplatte vorliegt. Dabei ist vorgesehen, daß die Untersetzung des Untersetzungsgetriebes zwischen Antriebsmotor und Winkelgeber derartig ist, so daß sich der gesamte Verfahrbereich der Stapeltragplatte zwischen Boden und der maximal möglichen Verfahrhöhe auf einen Bereich <360° des Rotors des Winkelgebers abbildet. Dies bedeutet mit anderen Worten, daß der Rotor des Winkelgebers keine ganze Umdrehung ausführt, wenn über den Antriebsmotor die Stapeltragplatte zwischen Boden und der größtmöglichen Höhe verfahren wird. Dadurch ist es möglich, stets einen eindeutigen Bezug zwischen dem aktuell gelieferten digitalen Winkelwert des Winkelgebers und der Position der Stapeltragplatte zu ermitteln. Insbesondere ist dabei vorgesehen, daß einer dem Winkelgeber nachgeordneten Auswerteeinheit, insbesondere nach Installation des Winkelgebers, die vorliegende Position der Stapeltragplatte einmalig eingegeben wird (z.B. über Handterminal bzw. Laptop), woraus dann eine Kalibrierung der Winkelwerte des Winkelgebers auf den eingegebenen Bezugswert erfolgt. Es ist somit nicht nötig, den Winkelgeber nach Austausch von Getriebeteilen oder sonstigen Maßnahmen im Stapelhubantrieb mechanisch zu justieren.According to one embodiment of the invention, the measuring device for detecting the Position of the stack support plate and for deriving information about the speed the method of the stack support plate as a via a reduction gear with the drive motor the stack lifting device coupled angle encoder. This angle encoder are absolute angular values over a number of lines in the manner of a parallel bus Removable, so that digital information is already available with each switch-on about the position of the stack support plate. It is intended that the reduction of the reduction gear between the drive motor and the angle encoder is such that the entire travel range of the stack support plate between the floor and the maximum maps possible travel height to an area <360 ° of the rotor of the angle encoder. In other words, this means that the rotor of the angle encoder is not a complete revolution executes when the stack support plate between the floor and the the greatest possible height. This makes it possible to always have a clear reference between the currently delivered digital angle value of the angle encoder and the position to determine the stack support plate. In particular, it is provided that one of the Evaluation unit arranged downstream of the angle encoder, especially after installation of the angle encoder, the current position of the stack support plate is entered once (e.g. via Hand terminal or laptop), from which a calibration of the angle values of the angle encoder is then obtained to the entered reference value. It is therefore not necessary to use the angle encoder after exchange of gear parts or other measures in the stacking stroke drive mechanically to adjust.

Durch die erfindungsgemäße Verwendung des absolute Winkelwerte liefernden Winkelgebers ist es möglich, das niederwertigste Bit der Winkelwertinformation, insbesondere zusätzlich in Verbindung mit höherwertigen Bits, permanent zur Ermittlung der Geschwindigkeit der Stapeltragplatte bei Betrieb des Antriebsmotors auszuwerten. Zu jedem Zeitpunkt liegt somit in einer oder zwei dem Winkelgeber nachgeschalteten Auswerteeinheiten eine digitale Information über die aktuelle (vertikale) Position der Stapeltragplatte als auch über deren Verfahrgeschwindigkeit vor. Erfindungsgemäß weiterbildend ist dabei vorgesehen, daß neben der die Positionsinformation des Winkelgebers auswertenden Steuerung eine zusätzliche Überwachungseinrichtung nebst weiterer Auswerteeinheit vorgesehen ist, welche eine Abweichung der Verfahrgeschwindigkeit der Stapeltragplatte zusätzlich erfaßt und durch welche bei festgestellter Überschreitung der höchstzulässigen Geschwindigkeit der Antriebsmotor des Stapelhubantriebes sofort stillgesetzt und eine mechanische Bremse eingelegt wird.Through the use according to the invention of the angle encoder supplying absolute angle values it is possible to add the least significant bit of the angle value information, in particular in conjunction with higher-value bits, permanent for determining the speed evaluate the stack support plate during operation of the drive motor. Anytime there is therefore one or two evaluation units downstream of the angle encoder digital information about the current (vertical) position of the stack support plate as well as about their travel speed. According to a further development according to the invention, that in addition to the controller evaluating the position information of the angle encoder additional monitoring device is provided along with another evaluation unit, which a deviation in the travel speed of the stack support plate is additionally detected and by which when the maximum permissible speed is exceeded the The drive motor of the stacking stroke drive is immediately stopped and a mechanical brake is engaged becomes.

Des weiteren erfolgt die Erläuterung eines Ausführungsbeispiels anhand der einzigen Figur. Diese zeigt prinzipiell die Komponenten der Steuerung eines Stapelhubantriebes im Anleger oder Ausleger einer Bogenoffsetdruckmaschine. Furthermore, an exemplary embodiment is explained with reference to the single figure. This basically shows the components of the control of a stacking lift drive in the feeder or delivery of a sheetfed offset press.

Ein auf einer Stapeltragplatte 1 befindlicher Stapel 2 eines Anlegers oder Auslegers einer nicht dargestellten Bogenoffsetdruckmaschine ist über mit der Stapeltragplatte 1 verbundenen Ketten 3 vertikal verfahrbar. Die Ketten 3 sind dabei in Wirkverbindung mit einer antreibbaren Kettenradwelle 4, wobei diese über ein Getriebe 5 mit einem Antriebsmotor 6 gekoppelt ist. Dem Antriebsmotor 6 ist dabei noch eine elektrisch auslösbare Bremse zugeordnet, welche in der Figur nicht dargestellt ist, und insbesondere bewerkstelligt, daß bei Abschalten des Stromes oder sonstigen Not- bzw. Gefahrensituationen die Stapeltragplatte 1 in der der jeweiligen Position arretierbar ist.A stack 2 of an investor or jib one located on a stack support plate 1 Sheet-fed offset printing machine, not shown, is connected to the stack support plate 1 Chains 3 vertically movable. The chains 3 are in operative connection with a drivable Sprocket shaft 4, this via a gear 5 with a drive motor 6 is coupled. An electrically releasable brake is also assigned to the drive motor 6, which is not shown in the figure, and in particular manages that at Switch off the power or other emergency or dangerous situations the stack support plate 1 can be locked in the respective position.

Der Antriebsmotor 6, insbesondere als bürstenloser Gleichstrommotor mit entsprechender elektronischer Kommutierung ausgebildet, ist beispielsweise direkt über dessen Welle und einem Untersetzungsgetriebe 8 mit einem Absolutwerte liefernden Winkelgeber 9 verbunden. Die Untersetzung des Untersetzungsgetriebes 8 zur Ankoppelung des Winkelgebers 9 ist dabei dergestalt, so daß der gesamte Verfahrweg der Stapeltragplatte 1 insbesondere zwischen dem Boden und einer maximal erreichbaren oberen Position innerhalb eines Anlegers bzw. Auslegers nicht ganz eine Umdrehung des Rotors des Winkelgebers 9 hervorruft. Ein Verfahren der Stapeltragplatte 1 zwischen dem in der Figur angedeuteten Boden und einer maximal erreichbaren oberen Position bedeutet dabei, daß die digitalen Werte des Winkelgebers stets unterschiedliche und die Position der Stapeltragplatte 1 eindeutig wiedergebende Werte annehmen. In diesem Ausführungsbeispiel ist dabei der Winkelgeber 9 über das Untersetzungsgetriebe direkt mit der Welle des Antriebsmotors 6 verbunden. Wie bereits voranstehend angedeutet kann dabei das Untersetzungsgetriebe 8 auch mit dem Getriebe 5 der Kettenradwelle 4 bzw. an der Kettenradwelle 4 angebracht sein. Erfindungsgemäß entscheidend ist dabei, daß der gesamte Verfahrweg der Stapeltragplatte 1 weniger als eine Umdrehung des Winkelgebers 9 hervorruft bzw. daß sich der gesamte Verfahrweg der Stapeltragplatte 1 auf einen Bereich < 360° des Rotor des Winkelgebers 9 abbildet.The drive motor 6, in particular as a brushless DC motor with a corresponding Electronic commutation is trained, for example, directly on the shaft and a reduction gear 8 connected to an absolute encoder 9. The reduction of the reduction gear 8 for coupling the angle encoder 9 is such that the entire travel of the stack support plate 1 in particular between the floor and a maximum attainable upper position within a feeder or boom does not quite cause one rotation of the rotor of the angle encoder 9. A method of the stack support plate 1 between the floor and indicated in the figure A maximum attainable upper position means that the digital values of the Angle encoder always different and the position of the stack support plate 1 clearly reproducing Accept values. In this exemplary embodiment, the angle encoder is 9 connected directly to the shaft of the drive motor 6 via the reduction gear. How the reduction gear 8 can also be indicated with the gear 5 of the sprocket shaft 4 or be attached to the sprocket shaft 4. According to the invention it is crucial that the total travel of the stack support plate 1 is less than one revolution of the angle encoder 9 or that the entire travel of the Stack support plate 1 maps to an area <360 ° of the rotor of the angle encoder 9.

Der Winkelgeber 9 ist erfindungsgemäß als Absolutwinkelgeber ausgebildet, d.h. diesem sind auf einer Anzahl von binäre Signale liefernden Leitungen oder in Form eines seriellen Datenstromes direkt nach Einschalten der Einrichtungen dessen Rotorlage (Geberscheibe) entsprechende digitale Signale entnehmbar. Der Winkelgeber 9 ist mit zwei nachgeschalteten Auswerteeinheiten 10.1, 10.2 verbunden, über welche nach Eingabe eines Bezugswertes die aktuelle vertikale Position der Stapeltragplatte 1 innerhalb des Anlegers bzw. Auslegers ermittelbar sind. Es erfolgt eine Zuordnung des eingegebenen Bezugwertes zu dem bei der Eingabe aktuell anliegenden digitalen Winkelwert, so daß nun sämtliche Stellungen (Positionen) der Stapeltragplatte 1 im Anleger/Ausleger durch Vorgabe eines digitalen Winkelwertes bestimmbar und anfahrbbar sind. Die Auswerteeinheiten 10.1, 10.2, vermittels denen die digitalen Signale des Winkelgebers 9 entsprechend den vorangehend gemachten Angaben umgerechnet werden, stehen einmal mit einer Steuerung 7 in Wirkverbindung, über welche entsprechend den Positionssignalen das Bestromen des Antriebsmotors 6 zum Anfahren vorgegebener Positionen der Stapeltragplatte 1 erfolgt, und zum anderen mit einer Überwachungsvorrichtung 12, durch welche ebenfalls eine Feststellung der maximal erlaubten Verfahrgeschwindigkeit als Funktion der Positionssignale des Winkelgebers 9 sowie ein Vergleich mit der aktuellen Verfahrgeschwindigkeit durchgeführt wird.According to the invention, the angle encoder 9 is designed as an absolute angle encoder, i.e. this are on a number of lines providing binary signals or in the form of a serial Data flow immediately after switching on the devices its rotor position (encoder disc) corresponding digital signals can be removed. The angle encoder 9 is followed by two Evaluation units 10.1, 10.2 connected, via which after entering a reference value the current vertical position of the stack support plate 1 within the feeder or boom can be determined. The reference value entered is assigned to the at the input of the currently applied digital angle value, so that now all positions (Positions) of the stack support plate 1 in the feeder / delivery by specifying a digital Angular values can be determined and approached. The evaluation units 10.1, 10.2 which the digital signals of the angle encoder 9 correspond to those made above Data to be converted are operatively connected to a controller 7, via which, according to the position signals, energizing the drive motor 6 for Approaching predetermined positions of the stack support plate 1 takes place, and on the other hand with one Monitoring device 12, through which a determination of the maximum allowed Travel speed as a function of the position signals of the angle encoder 9 and a Comparison with the current travel speed is carried out.

Wie bereits vorstehend angedeutet können dabei diese Verfahrvorgänge durch manuelle Bedienkommandos oder auch programmiert ausgeführt werden. Ferner vermag die Steuerung 7 nicht nur eine Positionsregelung zum Anfahren vorgegebener Positionen auszuführen, sondern auch die Verfahrgeschwindigkeit in Abhängigkeit der jeweiligen Position der Stapeltragplatte 1 durch entsprechendes Bestromen des Antriebsmotors 6 zu steuern.As already indicated above, these travel processes can be done manually Operating commands or programmed can be executed. The controller is also capable 7 not only perform position control for moving to predetermined positions, but also the travel speed depending on the respective position of the To control the stack support plate 1 by appropriately energizing the drive motor 6.

Die Steuerung 7 empfängt über die Auswerteeinheit 10.1 das digitale Positionssignal der Position der Stapeltragplatte 1. Ferner wird in der Auswerteeinheit 10.1 aus den Signalen des Winkelgebers 9 die Verfahrgeschwindigkeit der Stapeltragplatte 1 ermittelt und mit wie in der Steuerung 7 positionsabhängig festgelegten Höchstwerten verglichen. In der Steuerung 7 sind zu verschiedenen Kommandos, welcher dieser über eine Eingabevorrichtung 11 zuführbar sind, zulässige Höchstgeschwindigkeiten abgespeichert, welche in Abhängigkeit der Positionssignale des Winkelgebers 9 zum Verfahren der Stapeltragplatte 1 in Abhängigkeit des jeweiligen Kommandos aktiviert werden. So erfolgt zum Absenken der Stapeltragplatte 1, beispielsweise von Hand über die Eingabevorrichtung 11 aktiviert, zunächst das Absenken der Stapeltragplatte 1 mit einer ersten Geschwindigkeit Vmax1 bis die Stapeltragplatte eine vorgesehene Höhe oberhalb des Bodens eingenommen hat. Sodann erfolgt durch die Steuerung 7 das Umschalten auf eine zweite Verfahrgeschwindigkeit Vmax2, vermittels der über den Antriebsmotor die Stapeltragplatte 1 ganz auf den Bogen abgesenkt wird. Hierbei gilt, daß zum Anfahren der Endposition eine kleinere Geschwindigkeit gewählt wird als die oberhalb der Mindesthöhe gelegene Verfahrgeschwindigkeit zum Absenken der Stapeltragplatte 1. Es gilt somit Vmax2 < Vmax1.The controller 7 receives the digital position signal of the position of the stack support plate 1 via the evaluation unit 10.1. Furthermore, in the evaluation unit 10.1, the travel speed of the stack support plate 1 is determined from the signals of the angle encoder 9 and compared with the maximum values defined in the controller 7 as a function of position. Permissible maximum speeds are stored in the controller 7 for various commands, to which these can be fed via an input device 11, which are activated depending on the position signals of the angle encoder 9 for moving the stack support plate 1 depending on the respective command. In order to lower the stack support plate 1, for example activated by hand via the input device 11, the stack support plate 1 is first lowered at a first speed V max1 until the stack support plate has reached an intended height above the floor. The controller 7 then switches over to a second travel speed V max2, by means of which the stack support plate 1 is lowered completely onto the sheet via the drive motor. It applies here that a lower speed is selected for moving to the end position than the travel speed above the minimum height for lowering the stack support plate 1. V max2 <V max1 therefore applies .

Die in der Steuerung 7 zu einer Vielzahl von Bedienkommandos, welche einerseits über die Eingabeeinrichtung 11 manuell eingebbar sind oder durch die übergeordnete Steuerung der Maschine programmiert ausgelöst werden, abgelegten Höchstgeschwindigkeiten sind bestimmten Positionsbereichen zugeordnet, d.h. diese Positionsbereiche sind mit verschiedenen Verfahrgeschwindigkeiten parametrisiert. Diese Zuordnungen sind dabei auch in den Auswerteeinheiten 10.1, 10.2 abgespeichert. Das zuvorstehend beschriebene Absenken der Stapeltragplatte 1 durch Umschalten einer Verfahrgeschwindigkeit von Vmax1 auf Vmax2 entsprechend der erreichten Stellung der Stapeltragplatte durch Auswerten der Signale des Winkelgebers 9 in Verbindung mit der nachgeschalteten Auswerteeinheit 10.1 ist dabei nur beispielhaft, insbesondere werden in dieser Weise auch Verfahrvorgänge der Stapeltragplatte 1 beispielsweise bei einem automatischen Stapelwechsel im Non-Stop-Betrieb zur Vereinigung des Rest- bzw. Hilfsstapels ausgeführt. Wesentlich dabei ist, daß in der Steuerung 7 zu den über die Auswerteeinheit 10.1 erfassbaren Positionssignalen Geschwindigkeits-Sollwerte abgespeichert sind, in deren Abhängigkeit über den Antriebsmotor 6 die Stapeltragplatte 1 mit der jeweilig vorgesehenen Verfahrgeschwindigkeit bewegt wird.The maximum speeds stored in the controller 7 for a multiplicity of operating commands, which on the one hand can be entered manually via the input device 11 or are triggered by the higher-level control of the machine, are assigned to specific position ranges, ie these position ranges are parameterized with different travel speeds. These assignments are also stored in the evaluation units 10.1, 10.2. The above-described lowering of the stack support plate 1 by switching a travel speed from V max1 to V max2 corresponding to the position of the stack support plate achieved by evaluating the signals of the angle transmitter 9 in connection with the downstream evaluation unit 10.1 is only exemplary, in particular, this is also how travel processes are carried out Stack support plate 1, for example during an automatic stack change in non-stop operation to combine the remaining or auxiliary stack. It is essential that the control unit 7 stores speed setpoints for the position signals that can be detected by the evaluation unit 10.1, depending on the drive motor 6, the stack support plate 1 is moved at the respectively provided travel speed.

Durch die entsprechende Parametrisierung der Positionsbereiche (Intervall der Winkelwerte des Winkelgebers 9) mit vorgegebenen Geschwindigkeiten, vermittels denen dann der Antriebsmotor 6 zum Verfahren der Stapeltragplatte 1 angesteuert wird, vorzugsweise in Abhängigkeit des vorgewählten Kommandos, sind die entsprechenden Umschaltungen der Verfahrgeschwindigkeit der Stapeltragplatte 1 automatisch ausführbar, ohne daß im Verfahrweg der Stapeltragplatte 1 zusätzliche Schalthebel, Sensoren oder dgl. vorzusehen sind. Through the appropriate parameterization of the position ranges (interval of the angle values of the angle encoder 9) at predetermined speeds, by means of which the drive motor 6 is driven to move the stack support plate 1, preferably depending of the preselected command, the corresponding switches are the Travel speed of the stack support plate 1 can be carried out automatically without being in the travel path the stack support plate 1 additional shift levers, sensors or the like are to be provided.

Die Figur 1 zeigt ferner die bereits zuvorstehend angesprochene Überwachungseinrichtung 12, welche über die Auswerteeinheit 10.2 mit dem Winkelgeber 9 zur Positionserfassung der Stapeltragplatte 1 in Verbindung steht. Wie die Steuerung 7 (von der Auswerteeinheit 10.1) erhält auch die Überwachungseinrichtung 12 von der Auswerteeinheit 10.2 über eine Leitung Vü genau dann ein Signal, wenn die Verfahrgeschwindigkeit der Stapeltragplatte 1 den positionsabhängig festgelegten Maximalwert überschreitet. In diesem Fall wird der Antriebsmotor 6 durch die Überwachungseinrichtung 12 stillgesetzt.FIG. 1 also shows the monitoring device already mentioned above 12, which via the evaluation unit 10.2 with the angle encoder 9 for position detection the stack support plate 1 is connected. Like the controller 7 (from the evaluation unit 10.1) also receives the monitoring device 12 from the evaluation unit 10.2 via a Line Vü a signal when the travel speed of the stack support plate 1 exceeds the position-dependent maximum value. In this case, the drive motor 6 stopped by the monitoring device 12.

Die Auswerteeinheiten 10.1, 10.2 sind vorzugsweise einmal als programmierter Prozessor und einmal als Hardware-Baugruppe ausgebildet und dienen jeweils der Umwandlung der Digitalsignale des Winkelgebers 9 in von der Steuerung 7 bzw. der Überwachungseinrichtung 12 verwertbare Positionswerte (Signal Pos in Fig. 1). In den Auswerteeinheiten 10.1, 10.2 werden dabei ebenfalls aus den Gebersignalen die Ist-Werte der Verfahrgeschwindigkeit der Stapeltragplatte 1 gebildet (Auswerten der Impulsfolge des niederwertigsten Bit des Winkelgebers 9) und mit den gespeicherten Höchstwerten verglichen. Über entsprechend gebildete Signale auf den Leitungen Vü erfolgt bei Überschreiten der vorgegebenen Höchstwerte das Stillsetzen des Antriebsmotors 6 über die Steuerung 7 sowie die Überwachungseinrichtung 12. Die Überwachungseinrichtung 12 kann dabei zusätzlich in nicht dargestellter Weise mit einer dem Antriebsmotor 6 zugeordneten elektromagnetisch betätigbaren Bremse verbunden sein und diese bei Feststellen einer Geschwindigkeitsabweichung sofort betätigen. The evaluation units 10.1, 10.2 are preferably once as a programmed processor and once designed as a hardware assembly and each serve to convert the Digital signals from the angle encoder 9 in from the controller 7 or the monitoring device 12 usable position values (signal Pos in Fig. 1). In the evaluation units 10.1, 10.2 are also the actual values of the traversing speed from the encoder signals the stack support plate 1 formed (evaluation of the pulse sequence of the least significant bit of the Angle encoder 9) and compared with the stored maximum values. About accordingly formed signals on the lines Vü takes place when the predetermined Maximum values for stopping the drive motor 6 via the controller 7 and the monitoring device 12. The monitoring device 12 can also be shown in FIG Way with an electromagnetically actuated assigned to the drive motor 6 Brake connected and this when a speed deviation is detected press immediately.

BezugszeichenlisteReference list

11
StapeltragplatteStack support plate
22nd
Stapelstack
33rd
KetteChain
44th
KettenradwelleSprocket shaft
55
Getriebe (Kettenradwelle 4)Gear (sprocket shaft 4)
66
AntriebsmotorDrive motor
77
Steuerungcontrol
88th
UntersetzungsgetriebeReduction gear
99
WinkelgeberAngle encoder
10.1, 10.210.1, 10.2
AuswerteeinheitEvaluation unit
1111
EingabevorrichtungInput device
1212th
ÜberwachungseinrichtungMonitoring device
PosPos
PositionssignalPosition signal
VüVü
Signalleitung Geschwindigkeit überschrittenSignal line speed exceeded

Claims (5)

  1. Device for controlling the pile lifting drive of a sheet processing printing press, particularly for the feeder and/or delivery of an offset sheet printing press, wherein the pile lifting drive has a drive motor (6) with control (7) fitted thereto and furthermore a position measuring unit (9) is provided sensing the position of the pile carrier plate (1), the signals from which are fed to the control (7) for moving the pile carrier plate (1) and via the control (7), the movement speed of the pile carrier plate (1) can be preset in dependence on the position of the pile carrier plate 1 detected via the position measuring unit (9) and by the formation of corresponding control signals can be applied to the drive motor (6) for execution,
    characterised in that the position measuring unit (9) for processing the position signals has at least one evaluation unit (10.1, 10.2) connected thereto, that in the at least one evaluation unit (10.1, 10.2) from the signals of the position measuring unit (9), a value corresponding to the movement speed of the pile carrier plate (1) can be determined and that in the at least one evaluation unit (10.1, 10.2), the actual value corresponding to the movement speed of the pile carrier plate can be compared with a desired value provided for the respective position of the pile carrier plate (1) and via at least one subsequently connected unit (7, 12) on deviation being detected, the drive motor (6) can be rendered stationary.
  2. Device according to Claim 1, characterised in that by the control (7), the movement speed of the pile carrier plate (1) can be additionally preset in dependence on operating commands.
  3. Device according to Claim 1 or 2, characterised in that as well as an evaluation unit (10.1) connected downstream of the position measuring unit (9) and connected upstream of the control (7) of the drive motor (6), a further evaluation unit (10.2) is provided with a monitoring unit (12) connected downstream thereof for rendering the drive motor (6) stationary.
  4. Device according to Claim 3, characterised in that the evaluation units (10.1, 10.2) on the one hand are constructed as programmed processor units and on the other as hardware component groups.
  5. Device according to one of the preceding Claims, characterised in that the position measuring unit (9) is constructed as an angular sensor (9) connected via a reduction gear (8) with the drive motor (6), wherein the reduction of the gearing (8) is such that the entire movement path of the pile carrier plate (1) generates less than one revolution of the rotor of the angular sensor (9).
EP97104449A 1996-04-03 1997-03-15 Control device for driving the pile elevator of a sheet-processing machine Expired - Lifetime EP0799783B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19613288A DE19613288C2 (en) 1996-04-03 1996-04-03 Control for the stacking stroke drive of a sheet processing machine
DE19613288 1996-04-03

Publications (3)

Publication Number Publication Date
EP0799783A2 EP0799783A2 (en) 1997-10-08
EP0799783A3 EP0799783A3 (en) 1998-01-28
EP0799783B1 true EP0799783B1 (en) 2000-01-19

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EP97104449A Expired - Lifetime EP0799783B1 (en) 1996-04-03 1997-03-15 Control device for driving the pile elevator of a sheet-processing machine

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Country Link
EP (1) EP0799783B1 (en)
JP (1) JP2801588B2 (en)
AT (1) ATE188943T1 (en)
DE (2) DE19613288C2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613287C2 (en) * 1996-04-03 1999-03-04 Roland Man Druckmasch Stacking stroke drive for a sheet processing machine
DE19613290C1 (en) * 1996-04-03 1997-06-05 Roland Man Druckmasch Control for stack lifting drive mechanism of sheet processing machine
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Also Published As

Publication number Publication date
JPH1053342A (en) 1998-02-24
JP2801588B2 (en) 1998-09-21
DE19613288A1 (en) 1997-10-09
DE59701022D1 (en) 2000-02-24
EP0799783A3 (en) 1998-01-28
ATE188943T1 (en) 2000-02-15
DE19613288C2 (en) 1999-06-17
EP0799783A2 (en) 1997-10-08

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