EP0437813A2 - Control-device for the feeding device in a sheet-processing machine, particularly for printing machine - Google Patents

Control-device for the feeding device in a sheet-processing machine, particularly for printing machine Download PDF

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Publication number
EP0437813A2
EP0437813A2 EP90125188A EP90125188A EP0437813A2 EP 0437813 A2 EP0437813 A2 EP 0437813A2 EP 90125188 A EP90125188 A EP 90125188A EP 90125188 A EP90125188 A EP 90125188A EP 0437813 A2 EP0437813 A2 EP 0437813A2
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EP
European Patent Office
Prior art keywords
sheet
angular positions
computing
control
scanner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90125188A
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German (de)
French (fr)
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EP0437813B1 (en
EP0437813A3 (en
Inventor
Dieter Hauck
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Priority to AT90125188T priority Critical patent/ATE96121T1/en
Publication of EP0437813A2 publication Critical patent/EP0437813A2/en
Publication of EP0437813A3 publication Critical patent/EP0437813A3/en
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Publication of EP0437813B1 publication Critical patent/EP0437813B1/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
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/08—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect front register
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/20—Controlling associated apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/21—Angle
    • B65H2511/212—Rotary position
    • 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
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/82—Sound; Noise

Definitions

  • the invention relates to a device for regulating the sheet system in sheet-processing machines, in particular printing machines.
  • the sheets are lifted individually from a stack of sheets in the machine cycle and transported over the conveyor belts and timing rollers to the front stops of the feed table.
  • the grippers of the register feed drum take the sheets from standstill and accelerate them to machine speed.
  • the precisely fitting transfer of the sheets presupposes that the sheets arrive at the front stops at a predetermined angular position of the printing press and / or that the front sheet edges are aligned perpendicular to the sheet conveying direction. If these two conditions are not met, in extreme cases the sheets will not be picked up at all or unevenly over the gripper contact surfaces, which can lead to paper jams in the feeder area or to sheet losses in the machine. Both cases trigger a feeder or machine stop.
  • Deviations from the specified, optimal number of sheet arrival are process-related and cannot be avoided.
  • the arrival of the sheets is delayed with increasing machine speed.
  • the sheet arrival at constant machine speed depends on the paper weight: light paper arrives later at the front stops with the same setting than cardboard.
  • the skew of the sheets increases with increasing machine speed because the times for the alignment of the sheet leading edges along the front stops getting shorter and shorter. Incorrect settings in the feeder area can then no longer be corrected by the sluggishness of the sheets.
  • DE-OS 22 02 851 describes a device for automatic pressure adjustment in sheet-guiding machines, in particular in printing machines with an overlapped sheet inlet.
  • paper-scanning light marks are attached to the feed table.
  • angle encoders are arranged on a shaft of the machine, which actuate switches in predetermined angle ranges by means of cam disks. This machine-synchronous time or angle control determines three sampling intervals for the light marks per machine rotation, which are used to identify early, late and good sheets. The registration of early, late and inclined sheets triggers an immediate machine stop.
  • EP-PS 0 047 413 describes a method and a device for controlling the arrival of sheets of flexible material at the inlet of sheet-processing machines, in particular printing presses, the arrival of the sheet at a contact point by means of a tactile means within a predetermined time interval or is determined within a predetermined angle of rotation range.
  • a second, shorter time range is defined within this time range (good range).
  • the printer Since the printer has no information about any tendency changes in the sheet feeder, the entire printing process still depends to a large extent on the skill of the respective printer.
  • the invention has for its object to provide a device that detects the arrival of the sheet at the inlet of a printing press and / or the inclined position of a sheet and calculates and makes corrections in the event of a deviation from predetermined target values.
  • a scanner is arranged in the middle of the feed table, that an angle encoder is attached to a shaft of a cylinder of the printing press and that a computing / control device assigns the scanning signals of the scanner to the respective angular positions of the angle encoder, these angular positions with compares stored target values, calculates adjustment data in the event of deviations to correct the arrival of the sheet, and sends this adjustment data to an adjustment device.
  • At least one scanner is arranged symmetrically to the center of the feed table.
  • the scanning signals are assigned to the corresponding angular positions of the angle encoder. The fact that the scanner can be used simultaneously to control the arrival of the sheet and the sheet feeder is particularly advantageous.
  • the computing / control device determines the angular positions assigned to the scanning signals of the scanner and, in the event of a deviation of the angular positions, calculates the corresponding adjustment data for an inclined position of the following sheets and sends them to a control device.
  • the mean value of the angular positions is determined by the computing / regulating device. This mean value is used for the control as the actual value for the optimal number of sheet arrival times.
  • the invention can be further developed in such a way that centrally arranged scanners and symmetrically arranged scanners can optionally be switched on or off. For example, there is no need to detect the inclined position of the carton if the machine speed is not too high.
  • the computing / control device for corresponding adjustment data for deviations of the measured or calculated angular positions from the stored angular positions a phase adjustment of the arc is calculated and supplied to a corresponding actuating device.
  • a further embodiment of the invention provides that an absolute encoder or an incremental encoder which is connected to a counter is used as the angle encoder. Thanks to an angular resolution that can be freely selected within a wide range and corresponds to the dimensioning of the individual angular increments, the angular position of the machine when the sheet arrives can be determined very precisely.
  • Constant control of the angular position of the printing machine which can be determined with great accuracy, when the sheet arrives at the predetermined target value could have a negative effect on the printing process and thus on the printing quality.
  • the reason for this is that, statistically speaking, so-called "outliers" occur in the "normal” printing process, the cause of which is not due to incorrect settings of the mechanical parts of the sheet feeder.
  • a response of the regulation must be suppressed in the case of these "outliers", since, due to the inertia of the mechanical adjustment parts, there is otherwise the danger that waste is printed after a regulation on the missing sheet.
  • the computing / control device calculates an average value from a large number of measurements of the angular positions assigned to the scanning signals of the scanner, and that the computing / regulating device compares this value with the predetermined angular position setpoint.
  • the computing / regulating device only initiate the regulation to the predefined setpoint value when the angular positions determined by the scanning signals of the scanner exceed a predefined tolerance range. With this tolerance range it is, for example, the empirically determined scatter of the measured values around the statistical mean.
  • the statistical evaluation has the further advantage that tendency changes regarding the arch system are recognizable and distinguishable from “outliers” that occur from time to time. While the computing / regulating device should not respond to "outliers", tendencies changes in the production run which occur when the sheet arrival is originally optimally adjusted and are caused, for example, by the wear of mechanical parts, must be corrected. The fact that an objective measure of the quality or the uniformity of the sheet travel is available via the statistical evaluation of the number of sheet arrival is also extremely favorable. On the basis of experimentally determined comparison values, there is also the possibility of errors occurring in the sheet feed system, e.g. B. attributable to wear on the suction cups or incorrect setting of suction or blowing air nozzles. It is envisaged that such error messages will be shown to the printer on the display of the control panel.
  • the operating personnel are given the option of manually specifying the setpoint and / or the tolerance range of the angular position when the bow arrives optimally. This gives the printer the opportunity to use his or her experience in the printing process.
  • deviations that exceed the tolerance range around the setpoint are signaled acoustically and / or displayed optically on the central information display.
  • a further configuration of the invention aims to automate the printing process in the start-up phase.
  • the printer enters the paper weight on the central information display of the control device.
  • the computing / control device assigns this specification of the paper weight to the correspondingly stored, experimentally determined, optimal start settings of the investor.
  • the automatic adjustment of the feeder phase position which is dependent on the paper weight, ensures trouble-free start-up of the sheet travel and ensures from the start of the printing process that printing is carried out with high quality.
  • Fig. 1 shows the schematic representation of a printing press 1 with two printing units 2, a feeder 3 and a delivery 4. From a suction head, not shown in FIG. 1, the sheets are individually lifted from the sheet stack 5 and are scaly over the feed table 6 and transported to the front stops 8 of the printing press 1.
  • the gripper system of the register feed drum 7 detects the leading edge of the sheet and accelerates the sheet from standstill to machine speed.
  • An angle encoder 9 is attached to the shaft of the register application drum 7.
  • the computing / control device 14 assigns the scanning signals of the scanners 10a, 10b, which signal the arrival of the sheet, to the respective angular positions of the printing press 1 determined by the angle encoder 9. Adjustment data for the inclined and phase adjustment of the sheets in the application area of the printing press 1 are then determined in the computing / control device 14 from the difference between the measured and predetermined angular positions.
  • the computing / control device 14 is connected to the control panel 11.
  • the central information display 12 which shows the printer the calculated adjustment data.
  • the keyboard 13 enables the printer to intervene in the control loop and to make the necessary presettings and corrections manually.
  • FIG. 2 shows a schematic view of a top view of the application area and the first printing unit 2 of a printing press 1.
  • An angle encoder 9 is located on a shaft in the first printing unit 2.
  • Scanners 10a, 10b on the operator side and on the drive side are arranged symmetrically to the center of the feed table 6 in the region of the front stops 8.
  • the phase is adjusted by means of the servomotor 15, which changes the sheet feed by deflecting the feeder drive chain.
  • the inclination of the sheet position is achieved via the servomotor 16, which changes the relative position of the suction cups of the suction head to one another.
  • Fig. 3 shows the structure of the sheet arrival control on the feeder 3 a printing machine 1.
  • 17 is intended ⁇ of predetermined, optimum sheet arrival number of degrees and the difference gemesser sheet arrival ⁇ number of degrees is formed.
  • the control deviation ⁇ is applied to a disturbance variable at 18.
  • the compensation circuit 19 is a feedforward control, which takes into account the dependence of the number of degrees of arrival on the machine speed. The functional relationship between the two variables is known.
  • An occurring speed change ⁇ is fed to the compensation circuit 19.
  • the change in the number of arcs of arrival which is linked to the change in speed, is determined via the compensation characteristic curve and is applied to the control deviation at 18.
  • the compensation of known interference influences which is superior to the computing / regulating device 14, offers the advantage that these disturbances are corrected before they become effective on the feeder. This results in a much more constant sheet guidance in the feeder area.
  • the computer 20 determines adjustment data for the servomotors 15, 16 in accordance with the remaining control deviation ⁇ after the disturbance variable compensation.
  • the possibility is provided to choose between manual (II) and automatic adjustment (I) of the servomotors by means of a switch.
  • a control circuit 22 for positioning the servomotors is subordinate to the computing / control device 14.
  • 24 is a computer card that calculates the exact positioning of the servomotor 25.
  • the difference between the calculated actual and target positions of the servomotor is formed and the control loop 22 is closed.
  • Block 26 represents the feeder of the machine as a controlled system.
  • the scanning signals of the scanners 10a, 10b are assigned the respective numerical angular positions determined by the angle transmitter 9.
  • the corresponding number of arches is averaged over a large number of arches.
  • the smoothed signals are added and at 32 the mean value of these smoothed signals is formed. This mean value is supplied to the computing / regulating device 14 as the actual angular position value ⁇ ist .
  • the scanning signals are forwarded via lines 33 and 34 for output to the central information display 12 of the control panel 11.

Abstract

Damit ein Bogen paßgenau von den Greifern der Registeranlegetrommel (7) übernommen und in die Druckmaschine (1) hineintransportiert wird, muß er bei einer vorgegebenen Gradzahl an den Vorderanschlägen (8) des Anlegetisches (6) ankommen. Die optimal bemessene Bogenankunftsgradzahl ist jedoch nicht konstant, sondern ändert sich beispielsweise in Abhängigkeit von der Maschinengeschwindigkeit. Die erfindungsgemäße Vorrichtung zur Regelung der Bogenanlage bei bogenverarbeitenden Maschinen ist in der Lage, die Bogenanlage derart zu verbessern, daß der Bogen während des gesamten Druckprozesses bei der optimalen Gradzahl an den Vorderanschlägen (8) des Anlegetisches (6) ankommt. <IMAGE>So that a sheet is taken over by the grippers of the register feed drum (7) and transported into the printing press (1), it must arrive at the front stops (8) of the feed table (6) at a predetermined number of degrees. However, the optimally measured number of sheets arriving is not constant, but changes, for example, depending on the machine speed. The device according to the invention for regulating the sheet system in sheet-processing machines is able to improve the sheet system in such a way that the sheet arrives at the optimum number of degrees on the front stops (8) of the feed table (6) during the entire printing process. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Regelung der Bogenanlage bei bogenverarbeitenden Maschinen, insbesondere Druckmaschinen.The invention relates to a device for regulating the sheet system in sheet-processing machines, in particular printing machines.

Zum Bedrucken von Bogen in Offsetdruckmaschinen werden die Bogen im Maschinentakt einzeln von einem Bogenstapel abgehoben und über Förderbänder und Taktrollen geschuppt an die Vorderanschläge des Anlegertisches transportiert. Die Greifer der Registeranlegetrommel übernehmen die Bogen aus dem Stillstand und beschleunigen sie auf Maschinengeschwindigkeit.For printing sheets in offset printing machines, the sheets are lifted individually from a stack of sheets in the machine cycle and transported over the conveyor belts and timing rollers to the front stops of the feed table. The grippers of the register feed drum take the sheets from standstill and accelerate them to machine speed.

Die paßgenaue übernahme der Bogen setzt voraus, daß die Bogen bei einer vorgegebenen Winkelstellung der Druckmaschine an den Vorderanschlägen ankommen und/oder daß die Bogenvorderkanten senkrecht zur Bogenförderrichtung ausgerichtet sind. Sind diese beiden Bedingungen nicht erfüllt, werden die Bogen im Extremfall überhaupt nicht, bzw. ungleichmäßig über die Greiferauflageflächen erfaßt, was zu Papierstau im Anlegerbereich, bzw. zu Bogenverlusten in der Maschine führen kann. Beide Fälle lösen einen Anleger- bzw. Maschinenstop aus.The precisely fitting transfer of the sheets presupposes that the sheets arrive at the front stops at a predetermined angular position of the printing press and / or that the front sheet edges are aligned perpendicular to the sheet conveying direction. If these two conditions are not met, in extreme cases the sheets will not be picked up at all or unevenly over the gripper contact surfaces, which can lead to paper jams in the feeder area or to sheet losses in the machine. Both cases trigger a feeder or machine stop.

Abweichungen von der vorgegebenen, optimalen Bogenankunftsgradzahl sind prozeßbedingt und nicht vermeidbar. So verzögert sich die Ankunft der Bogen mit steigender Maschinengeschwindigkeit. Weiterhin ist die Bogenankunft bei konstanter Maschinengeschwindigkeit abhängig vom Papiergewicht: leichtes Papier kommt bei gleicher Einstellung später an den Vorderanschlägen an als Karton. Zusätzlich erhöht sich die Schräglage der Bogen mit steigender Maschinengeschwindigkeit, da die Zeiten für die Ausrichtung der Bogenvorderkanten längs der Vorderanschläge immer kürzer werden. Fehleinstellungen im Anlegerbereich können dann nicht mehr durch die Trägheit der Bogen ausreguliert werden.Deviations from the specified, optimal number of sheet arrival are process-related and cannot be avoided. The arrival of the sheets is delayed with increasing machine speed. Furthermore, the sheet arrival at constant machine speed depends on the paper weight: light paper arrives later at the front stops with the same setting than cardboard. In addition, the skew of the sheets increases with increasing machine speed because the times for the alignment of the sheet leading edges along the front stops getting shorter and shorter. Incorrect settings in the feeder area can then no longer be corrected by the sluggishness of the sheets.

In der DE-OS 22 02 851 wird eine Vorrichtung zur automatischen Druckanstellung bei bogenführenden Maschinen, insbesondere bei Druckmaschinen mit überlapptem Einlauf der Bogen, beschrieben. Im Bereich der Vordermarken sind im Anlegertisch papierabtastende Lichtmarken angebracht. Zusätzlich sind an einer Welle der Maschine Winkelgeber angeordnet, die in vorgegebenen Winkelbereichen mittels Nockenscheiben Schalter betätigen. Über diese maschinensynchrone Zeit- bzw. Winkelsteuerung werden pro Maschinendrehung drei Abtastintervalle für die Lichtmarken bestimmt, die der Identifizierung von Früh-, Spät- und Gutbogen dienen. Die Registrierung von Früh-, Spät- und auch Schrägbogen löst einen sofortigen Maschinenstop aus.DE-OS 22 02 851 describes a device for automatic pressure adjustment in sheet-guiding machines, in particular in printing machines with an overlapped sheet inlet. In the area of the front marks, paper-scanning light marks are attached to the feed table. In addition, angle encoders are arranged on a shaft of the machine, which actuate switches in predetermined angle ranges by means of cam disks. This machine-synchronous time or angle control determines three sampling intervals for the light marks per machine rotation, which are used to identify early, late and good sheets. The registration of early, late and inclined sheets triggers an immediate machine stop.

In der EP-PS 0 047 413 werden ein Verfahren und eine Vorrichtung zur Steuerung der Ankunft von Bogen aus biegsamem Material am Einlaß von bogenverarbeitenden Maschinen, insbesondere Druckmaschinen, beschrieben, wobei die Ankunft des Bogens an einer Anlagestelle durch Tastmittel innerhalb eines vorgegebenen Zeitintervalls bzw. innerhalb eines vorgegebenen Drehwinkelbereichs festgestellt wird. Innerhalb dieses Zeitbereichs (Gutbereich) wird ein zweiter, kürzerer Zeitbereich (optimaler Zeitbereich) festgelegt. Sobald ein Bogen außerhalb dieses optimalen Zeitbereichs an der Anlagestelle ankommt, wird eine manuelle oder automatische Nachstellung des Bogenvorschubs ausgelöst.EP-PS 0 047 413 describes a method and a device for controlling the arrival of sheets of flexible material at the inlet of sheet-processing machines, in particular printing presses, the arrival of the sheet at a contact point by means of a tactile means within a predetermined time interval or is determined within a predetermined angle of rotation range. A second, shorter time range (optimal time range) is defined within this time range (good range). As soon as a sheet arrives at the feed point outside this optimal time range, a manual or automatic readjustment of the sheet feed is triggered.

Ein entscheidender Nachteil beider Lösungen liegt darin, daß die aktuelle Bogenankunftsgradzahl, ebenso wie die Gradzahl, die die Bogenschräglage charakterisiert, nur in der Größenordnung der fest vorgegebenen Abtastintervalle bekannt ist. Tendenzielle und prozeßbedingte Änderungen der Bogenankunftsgradzahl bzw. der Bogenschräglage sind der Messung nicht zugänglich.A decisive disadvantage of both solutions is that the current number of degrees of arrival, as well as the number of degrees which characterize the inclined position of the bow, is only known in the order of magnitude of the predetermined sampling intervals. Trends and process-related changes in The number of degrees of arrival or the inclined position of the bow are not accessible to the measurement.

Da dem Drucker keine Information über tendentielle Änderungen bei der Bogenanlage zur Verfügung steht, ist der gesamte Druckablauf weiterhin in hohem Maße von dem Fachkönnen des jeweiligen Druckers abhängig.Since the printer has no information about any tendency changes in the sheet feeder, the entire printing process still depends to a large extent on the skill of the respective printer.

In den beiden zuvor genannten Schriften wirkt sich auch nachteilig aus, daß Änderungen der Intervallgröße nur mittels einer mechanischen Verstellung zwei er Nockenscheiben erfolgen können, wobei zur Durchführung einer solchen Verstellung die Druckmaschine gestoppt werden muß. Auch ist eine Änderung eines einmal vorgegebenen optimalen Zeitbereichs während des Druckprozesses unmöglich. Somit kann beispielsweise die von der Geschwindigkeit abhängige Änderung der Bogenankunftsgradzahl während des Maschinenlaufs nicht durchgeführt werden.In the two documents mentioned above, it is also disadvantageous that changes in the interval size can only be made by means of a mechanical adjustment of two cam disks, the printing machine having to be stopped in order to carry out such an adjustment. It is also impossible to change an optimal time range once it has been specified during the printing process. Thus, for example, the speed-dependent change in the number of sheet arrival cannot be carried out while the machine is running.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung zu schaffen, die die Bogenankunft am Einlaß einer Druckmaschine und/oder die Schräglage eines Bogens gradzahlmäßig erfaßt und im Falle eines Abweichens von vorgegebenen Sollwerten entsprechende Korrekturen berechnet und vornimmt.Based on this prior art, the invention has for its object to provide a device that detects the arrival of the sheet at the inlet of a printing press and / or the inclined position of a sheet and calculates and makes corrections in the event of a deviation from predetermined target values.

Die Aufgabe wird dadurch gelöst, daß ein Abtaster in der Mitte des Anlegetisches angeordnet ist, daß ein Winkelgeber an einer Welle eines Zylinders der Druckmaschine angebracht ist und daß eine Rechen-/Regeleinrichtung die Tastsignale des Abtasters den jeweiligen Winkelstellungen des Winkelgebers zuordnet, diese Winkelstellungen mit gespeicherten Sollwerten vergleicht, bei Abweichungen Verstelldaten für eine Korrektur der Bogenankunft berechnet und diese Verstelldaten einer Verstelleinrichtung zuleitet.The object is achieved in that a scanner is arranged in the middle of the feed table, that an angle encoder is attached to a shaft of a cylinder of the printing press and that a computing / control device assigns the scanning signals of the scanner to the respective angular positions of the angle encoder, these angular positions with compares stored target values, calculates adjustment data in the event of deviations to correct the arrival of the sheet, and sends this adjustment data to an adjustment device.

Äußerst günstig ist zu bewerten, daß neben der gradzahlmäßigen Erfassung der Bogenankunft auch eine exakte Aussage über die Schräglage des Bogens gemacht werden kann. Zu diesem Zweck ist jeweils mindestens ein Abtaster symmetrisch zur Mitte des Anlegetisches angeordnet. Die Abtastsignale werden den entsprechenden Winkelstellungen des Winkelgebers zugeordnet. Besonders günstig wirkt sich hierbei aus, daß die Abtaster gleichzeitig zur Kontrolle der Bogenankunft und der Bogenanlage verwendet werden können.It is extremely favorable to assess that, in addition to the degree-based recording of the arrival of the arch, an exact statement can also be made about the inclined position of the arch. For this purpose, at least one scanner is arranged symmetrically to the center of the feed table. The scanning signals are assigned to the corresponding angular positions of the angle encoder. The fact that the scanner can be used simultaneously to control the arrival of the sheet and the sheet feeder is particularly advantageous.

In einer vorteilhaften Weiterbildung der Erfindung ist vorgesehen, daß die Rechen-/Regeleinrichtung die den Tastsignalen der Abtaster zugeordneten Winkelstellungen ermittelt und bei einer Abweichung der Winkelstellungen die entsprechenden Verstelldaten für eine Schrägstellung der nachfolgenden Bogen berechnet und einer Steuereinrichtung zuleitet.In an advantageous development of the invention, it is provided that the computing / control device determines the angular positions assigned to the scanning signals of the scanner and, in the event of a deviation of the angular positions, calculates the corresponding adjustment data for an inclined position of the following sheets and sends them to a control device.

Vorteilhaft ist weiterhin, daß bei einer Abweichung der Winkelstellungen der Mittelwert der Winkelstellungen von der Rechen-/Regeleinrichtung ermittelt wird. Dieser Mittelwert dient der Regelung als Istwert für die optimale Bogenankunftsgradzahl.It is also advantageous that if the angular positions deviate, the mean value of the angular positions is determined by the computing / regulating device. This mean value is used for the control as the actual value for the optimal number of sheet arrival times.

In einer Ausgestaltung läßt sich die Erfindung dahingehend weiterbilden, daß mittig angeordnete Abtaster und symmetrisch angeordnete Abtaster wahlweise zu- bzw. abgeschaltet werden können. So kann beispielsweise auf eine Erkennung der Bogenschräglage bei Karton verzichtet werden, wenn die Maschinengeschwindigkeit nicht zu hoch ist.In one embodiment, the invention can be further developed in such a way that centrally arranged scanners and symmetrically arranged scanners can optionally be switched on or off. For example, there is no need to detect the inclined position of the carton if the machine speed is not too high.

Gemäß einer vorteilhaften Weiterbildung der erfindungsgemäßen Vorrichtung wird vorgeschlagen, daß die Rechen-/Regeleinrichtung bei Abweichen der gemessenen, bzw. errechneten Winkelstellungen von den abgespeicherten Winkelstellungen entsprechende Verstelldaten für eine Phasenverstellung der Bogen berechnet und einer entsprechenden Stelleinrichtung zuleitet.According to an advantageous development of the device according to the invention, it is proposed that the computing / control device for corresponding adjustment data for deviations of the measured or calculated angular positions from the stored angular positions a phase adjustment of the arc is calculated and supplied to a corresponding actuating device.

Eine weitere Ausgestaltung der Erfindung sieht vor, als Winkelgeber einen Absolutgeber oder einen Inkrementalgeber zu verwenden, der mit einem Zähler verbunden ist. Durch eine in weitem Rahmen beliebig wählbare Winkelauflösung, die der Dimensionierung der einzelnen Winkelinkremente entspricht, Läßt sich die Winkelstellung der Maschine bei der Bogenankunft sehr exakt bestimmen.A further embodiment of the invention provides that an absolute encoder or an incremental encoder which is connected to a counter is used as the angle encoder. Thanks to an angular resolution that can be freely selected within a wide range and corresponds to the dimensioning of the individual angular increments, the angular position of the machine when the sheet arrives can be determined very precisely.

Eine ständige Regelung der mit großer Genauigkeit bestimmbaren Winkelstellung der Druckmaschine bei der Bogenankunft auf den vorgegebenen Sollwert könnte sich negativ auf den Druckprozeß und damit auf die Druckqualität auswirken. Die Ursache hierfür liegt darin, daß statistisch gesehen in dem "normalen" Druckprozeß hin und wieder sogenannte "Ausreißer" auftreten, deren Ursache nicht auf Fehleinstellungen der mechanischen Teile der Bogenanlage zurückzuführen ist. Ein Ansprechen der Regelung muß im Falle dieser "Ausreißer" unterdrückt werden, da infolge der Trägheit der mechanischen Verstellteile ansonsten nach einer Regelung auf den Fehlbogen die Gefahr besteht, daß Makulatur gedruckt wird.Constant control of the angular position of the printing machine, which can be determined with great accuracy, when the sheet arrives at the predetermined target value could have a negative effect on the printing process and thus on the printing quality. The reason for this is that, statistically speaking, so-called "outliers" occur in the "normal" printing process, the cause of which is not due to incorrect settings of the mechanical parts of the sheet feeder. A response of the regulation must be suppressed in the case of these "outliers", since, due to the inertia of the mechanical adjustment parts, there is otherwise the danger that waste is printed after a regulation on the missing sheet.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist daher vorgesehen, daß die Rechen-/Regeleinrichtung aus einer Vielzahl von Messungen der den Abtastsignalen der Abtaster zugeordneten Winkelstellungen einen Mittelwert berechnet und daß die Rechen-/Regeleinrichtung diesen Wert mit dem vorgegebenen Winkelstellungs-Sollwert vergleicht. Als Alternative hierzu wird vorgeschlagen, daß die Rechen-/Regeleinrichtung die Regelung auf den vorgegebenen Sollwert erst veranlaßt, wenn die durch die Abtastsignale der Abtaster ermittelten Winkelstellungen einen vorgegebenen Toleranzbereich überschreiten. Bei diesem Toleranzbereich handelt es sich beispielsweise um die empirisch ermittelte Streuung der Meßwerte um den statistischen Mittelwert.According to an advantageous embodiment of the invention, it is therefore provided that the computing / control device calculates an average value from a large number of measurements of the angular positions assigned to the scanning signals of the scanner, and that the computing / regulating device compares this value with the predetermined angular position setpoint. As an alternative to this, it is proposed that the computing / regulating device only initiate the regulation to the predefined setpoint value when the angular positions determined by the scanning signals of the scanner exceed a predefined tolerance range. With this tolerance range it is, for example, the empirically determined scatter of the measured values around the statistical mean.

Die statistische Auswertung hat weiterhin den Vorteil, daß tendenzielle Änderungen bezüglich der Bogenanlage erkennbar und von hin und wieder auftretenden "Ausreißern" unterscheidbar werden. Während die Rechen-/Regeleinrichtung auf "Ausreißer" nicht ansprechen soll, müssen tendenzielle Änderungen im Fortdruck, die bei ursprünglich optimal eingestellter Bogenankunft auftreten und beispielsweise durch den Verschleiß mechanischer Teile verursacht werden, korrigiert werden. Äußerst günstig ist auch der Umstand zu bewerten, daß über die statistische Auswertung der Bogenankunftsgradzahlen ein objektiver Maßstab für die Güte bzw. die Gleichmäßigkeit des Bogenlaufs zur Verfügung steht. Auch besteht anhand von experimentell ermittelten Vergleichswerten die Möglichkeit, auftretende Fehler bei der Bogenanlage z. B. auf Verschleiß der Sauger oder auf fehlerhafte Einstellung von Saug- oder Blasluftdüsen zurückzuführen. Es ist vorgesehen, daß solche Fehlermeldungen dem Drucker am Display des Bedienpultes angezeigt werden.The statistical evaluation has the further advantage that tendency changes regarding the arch system are recognizable and distinguishable from "outliers" that occur from time to time. While the computing / regulating device should not respond to "outliers", tendencies changes in the production run which occur when the sheet arrival is originally optimally adjusted and are caused, for example, by the wear of mechanical parts, must be corrected. The fact that an objective measure of the quality or the uniformity of the sheet travel is available via the statistical evaluation of the number of sheet arrival is also extremely favorable. On the basis of experimentally determined comparison values, there is also the possibility of errors occurring in the sheet feed system, e.g. B. attributable to wear on the suction cups or incorrect setting of suction or blowing air nozzles. It is envisaged that such error messages will be shown to the printer on the display of the control panel.

Besonders günstig ist auch die folgende Weiterbildung der erfindungsgemäßen Vorrichtung: dem Bedienpersonal wird die Möglichkeit eingeräumt, den Sollwert und/oder den Toleranzbereich der Winkelstellung bei der optimalen Bogenankunft manuell vorzugeben. Damit hat der Drucker die Möglichkeit, seine Erfahrung in den Druckprozeß einfließen zu lassen.The following development of the device according to the invention is also particularly favorable: the operating personnel are given the option of manually specifying the setpoint and / or the tolerance range of the angular position when the bow arrives optimally. This gives the printer the opportunity to use his or her experience in the printing process.

Weiterhin ist vorgesehen, daß Abweichungen, die den Toleranzbereich um den Sollwert überschreiten, akustische signalisiert und/oder optisch an dem zentralen Informationsdisplay angezeigt werden.Furthermore, it is provided that deviations that exceed the tolerance range around the setpoint are signaled acoustically and / or displayed optically on the central information display.

Gemäß einer Weiterbildung wird weiterhin vorgeschlagen, daß an dem zentralen Informationsdisplay des Bedienpults die exakten Verstelldaten für eine Korrektur angezeigt werden, so daß das Bedienpersonal wahlweise notwendige Korrekturen manuell tätigen kann.According to a further development, it is further proposed that the exact adjustment data for a correction are shown on the central information display of the control panel, so that the operating personnel can optionally make the necessary corrections manually.

Während die zuletzt beschriebenen Ausgestaltungen darauf hinauslaufen, dem Drucker die Möglichkeit zu bieten, seine Erfahrung in den Druckprozeß einzubringen, zielt eine weitere Ausgestaltung der Erfindung darauf ab, den Druckprozeß in der Anlaufphase zu automatisieren. Am zentralen Informationsdisplay der Steuereinrichtung gibt der Drucker zu Beginn des Druckprozesses das Papiergewicht ein. Die Rechen-/Regeleinrichtung ordnet diese Angabe des Papiergewichts der entsprechend abgespeicherten, experimentell ermittelten, optimalen Starteinstellungen des Anlegers zu. Die vom Papiergewicht abhängige, automatische Einstellung der Anlegerphasenlage gewährleistet ein störungsfreies Anfahren des Bogenlaufs und stellt von Beginn des Druckprozesses an sicher, daß mit hoher Qualität gedruckt wird.While the last-described configurations amount to offering the printer the possibility to bring his experience into the printing process, a further configuration of the invention aims to automate the printing process in the start-up phase. At the start of the printing process, the printer enters the paper weight on the central information display of the control device. The computing / control device assigns this specification of the paper weight to the correspondingly stored, experimentally determined, optimal start settings of the investor. The automatic adjustment of the feeder phase position, which is dependent on the paper weight, ensures trouble-free start-up of the sheet travel and ensures from the start of the printing process that printing is carried out with high quality.

Die Erfindung wird anhand der nachfolgenden Zeichnungen näher erläutert. Es zeigt:

Fig. 1
eine schematische Darstellung einer Druckmaschine in Seitenansicht
Fig. 2
eine Draufsicht auf den Anlegerbereich einer Druckmaschine in schematischer Darstellung
Fig. 3
Struktur der Bogenankunftsregelung am Anleger einer Druckmaschine
The invention is illustrated by the following drawings. It shows:
Fig. 1
a schematic representation of a printing machine in side view
Fig. 2
a plan view of the feeder area of a printing press in a schematic representation
Fig. 3
Structure of the sheet arrival regulation at the feeder of a printing press

Fig. 1 zeigt die schematische Darstellung einer Druckmaschine 1 mit zwei Druckwerken 2, einem Anleger 3 und einem Ausleger 4. Von einem in der Fig. 1 nicht dargestellten Saugkopf werden die Bogen einzeln vom Bogenstapel 5 abgehoben und über den Anlegetisch 6 geschuppt an die Vorderanschläge 8 der Druckmaschine 1 transportiert. Das Greifersystem der Registeranlegetrommel 7 erfaßt die Bogenvorderkante und beschleunigt die Bogen aus dem Stillstand auf Maschinengeschwindigkeit.Fig. 1 shows the schematic representation of a printing press 1 with two printing units 2, a feeder 3 and a delivery 4. From a suction head, not shown in FIG. 1, the sheets are individually lifted from the sheet stack 5 and are scaly over the feed table 6 and transported to the front stops 8 of the printing press 1. The gripper system of the register feed drum 7 detects the leading edge of the sheet and accelerates the sheet from standstill to machine speed.

An der Welle der Registeranlegetrommel 7 ist ein Winkelgeber 9 angebracht. Die Rechen-/Regeleinrichtung 14 ordnet die Abtastsignale der Abtaster 10a, 10b, welche die Bogenankunft signalisieren, den jeweiligen vom Winkelgeber 9 gradzahlmäßig ermittelten Winkelstellungen der Druckmaschine 1 zu. Anschließend werden in der Rechen-/Regeleinrichtung 14 aus der Differenz von gemessenen und vorgegebenen Winkelstellungen Verstelldaten für die Schräg- und Phasenverstellung der Bogen im Anlegebereich der Druckmaschine 1 bestimmt.An angle encoder 9 is attached to the shaft of the register application drum 7. The computing / control device 14 assigns the scanning signals of the scanners 10a, 10b, which signal the arrival of the sheet, to the respective angular positions of the printing press 1 determined by the angle encoder 9. Adjustment data for the inclined and phase adjustment of the sheets in the application area of the printing press 1 are then determined in the computing / control device 14 from the difference between the measured and predetermined angular positions.

Die Rechen-/Regeleinrichtung 14 ist mit dem Bedienpult 11 verbunden. Auf der Oberseite des Bedienpults 11 befinden sich das zentrale Informationsdisplay 12, das dem Drucker die errechneten Verstelldaten anzeigt. Weiterhin ist dem Drucker mittels der Tastatur 13 die Möglichkeit gegeben, in den Regelkreis einzugreifen und notwendige Voreinstellungen und Korrekturen manuell vorzunehmen.The computing / control device 14 is connected to the control panel 11. On the top of the control panel 11 there is the central information display 12, which shows the printer the calculated adjustment data. Furthermore, the keyboard 13 enables the printer to intervene in the control loop and to make the necessary presettings and corrections manually.

In Fig. 2 ist in schematischer Darstellung eine Draufsicht auf den Anlegebereich und das erste Druckwerk 2 einer Druckmaschine 1 dargestellt. Im ersten Druckwerk 2 befindet sich an einer Welle ein Winkelgeber 9. Bedienseitiger und antriebsseitiger Abtaster 10a, 10b sind symmetrisch zur Mitte des Anlegetisches 6 im Bereich der Vorderanschläge 8 angeordnet. Die Phasenverstellung erfolgt mittels des Stellmotors 15, der über Auslenkung der Anlegerantriebskette den Bogenvorschub ändert. Die Schrägstellung der Bogenlage wird über den Stellmotor 16 erreicht, der die relative Lage der Schleppsauger des Saugkopfes zueinander ändert.2 shows a schematic view of a top view of the application area and the first printing unit 2 of a printing press 1. An angle encoder 9 is located on a shaft in the first printing unit 2. Scanners 10a, 10b on the operator side and on the drive side are arranged symmetrically to the center of the feed table 6 in the region of the front stops 8. The phase is adjusted by means of the servomotor 15, which changes the sheet feed by deflecting the feeder drive chain. The inclination of the sheet position is achieved via the servomotor 16, which changes the relative position of the suction cups of the suction head to one another.

Fig. 3 zeigt die Struktur der Bogenankunftsregelung am Anleger 3 einer Druckmaschine 1. Bei 17 wird die Differenz von vorgegebener, optimaler Bogenankunftsgradzahl φsoll und gemesser Bogenankunftsgradzahl φist gebildet. Der Regelabweichung Δφ wird bei 18 eine Störgröße aufgeschaltet. Beispielsweise handelt es sich bei der Kompensationsschaltung 19 um eine Störgrößenaufschaltung, die die Abhängigkeit der Bogenankunftsgradzahl von der Maschinengeschwindigkeit berücksichtigt. Der funktionale Zusammenhang beider Größen ist bekannt. Eine auftretende Geschwindigkeitsänderung Δϑ wird der Kompensationsschaltung 19 zugeleitet. Über die Kompensationskennlinie wird die mit der Geschwindigkeitsänderung verknüpfte Änderung der Bogenankunftsgradzahl bestimmt und bei 18 der Regelabweichung aufgeschaltet. Die der Rechen-/Regeleinrichtung 14 übergeordnete Kompensation bekannter Störeinflüsse bietet den Vorteil, daß diese Störungen ausgeregelt werden, bevor sie am Anleger wirksam werden. Hierdurch wird eine wesentlich konstantere Bogenführung im Anlegerbereich erzielt.Fig. 3 shows the structure of the sheet arrival control on the feeder 3 a printing machine 1. 17 is intended φ of predetermined, optimum sheet arrival number of degrees and the difference gemesser sheet arrival φ number of degrees is formed. The control deviation Δφ is applied to a disturbance variable at 18. For example, the compensation circuit 19 is a feedforward control, which takes into account the dependence of the number of degrees of arrival on the machine speed. The functional relationship between the two variables is known. An occurring speed change Δϑ is fed to the compensation circuit 19. The change in the number of arcs of arrival, which is linked to the change in speed, is determined via the compensation characteristic curve and is applied to the control deviation at 18. The compensation of known interference influences, which is superior to the computing / regulating device 14, offers the advantage that these disturbances are corrected before they become effective on the feeder. This results in a much more constant sheet guidance in the feeder area.

Der Rechner 20 bestimmt entsprechend der verbleibenden Regelabweichung Δφ nach der Störgrößenkompensation Verstelldaten für die Stellmotoren 15, 16. Bei 21 ist die Möglichkeit vorgesehen, mittels eines Schalters zwischen einer manuellen (II) und einer automatischen Verstellung (I) der Stellmotoren zu wählen.The computer 20 determines adjustment data for the servomotors 15, 16 in accordance with the remaining control deviation Δφ after the disturbance variable compensation. At 21, the possibility is provided to choose between manual (II) and automatic adjustment (I) of the servomotors by means of a switch.

Der Rechen-/Regeleinrichtung 14 ist ein Regelkreis 22 für die Positionierung der Stellmotoren unterlagert. Bei 24 handelt es sich um eine Rechnerkarte, die die exakte Positionierung des Stellmotors 25 berechnet. Bei 23 wird die Differenz der berechneten Ist- und Sollposition des Stellmotors gebildet und der Regelkreis 22 geschlossen.A control circuit 22 for positioning the servomotors is subordinate to the computing / control device 14. 24 is a computer card that calculates the exact positioning of the servomotor 25. At 23, the difference between the calculated actual and target positions of the servomotor is formed and the control loop 22 is closed.

Block 26 stellt den Anleger der Maschine als Regelstrecke dar.Block 26 represents the feeder of the machine as a controlled system.

Bei 27 und 28 werden den Abtastsignalen der Abtaster 10a, 10b die jeweiligen, vom Winkelgeber 9 bestimmten numerischen Winkelstellungen zugeordnet. Bei 29 bzw. 30 werden über eine Vielzahl von Bogen die entsprechenden Bogenankunftsgradzahlen gemittelt. Bei 31 werden die geglätteten Signale addiert und bei 32 wird der Mittelwert dieser geglätteten Signale gebildet. Dieser Mitteltwert wird als Winkelstellungs-Istwert φist der Rechen-/Regeleinrichtung 14 zugeführt.At 27 and 28, the scanning signals of the scanners 10a, 10b are assigned the respective numerical angular positions determined by the angle transmitter 9. At 29 and 30, the corresponding number of arches is averaged over a large number of arches. At 31 the smoothed signals are added and at 32 the mean value of these smoothed signals is formed. This mean value is supplied to the computing / regulating device 14 as the actual angular position value φ ist .

Die Abtastsignale werden nach ihrer Glättung bei 29 bzw. 30 über Leitungen 33 bzw. 34 zur Ausgabe an das zentrale Informationsdisplay 12 des Bedienpultes 11 weitergeleitet.After being smoothed at 29 or 30, the scanning signals are forwarded via lines 33 and 34 for output to the central information display 12 of the control panel 11.

TEILELISTEPARTS LIST

11
Druckmaschine Printing press
22nd
Druckwerk Printing unit
33rd
Anleger Investors
44th
Ausleger boom
55
Bogenstapel Sheet stack
66
Anlegetisch Feed table
77
Registeranlegetrommel Register feed drum
88th
Vorderanschlag Front stop
99
Winkelgeber Angle encoder
1010th
Abtaster Scanner
10a10a
Abtaster Bedienseite Scanner operating side
10b10b
Abtaster Antriebsseite Scanner drive side
1111
Bedienpult control panel
1212
Zentrales Informationsdisplay Central information display
1313
Tastatur keyboard
1414
Rechen-/Regeleinrichtung Computing / control device
1515
Stellmotor für Phasenverstellung Actuator for phase adjustment
1616
Stellmotor für Schrägstellung Actuator for inclination

Claims (17)

Vorrichtung zur Regelung der Bogenanlage bei bogenverarbeitenden Maschinen, insbesondere Druckmaschinen, wobei die Ankunft eines Bogens durch Abtaster im Bereich der Vorderanschläge des Anlegetisches festgestellt wird,
dadurch gekennzeichnet,
daß ein Abtaster (10) im mittleren Bereich des Anlegetisches (6) angeordnet ist, daß ein Winkelgeber (9) an einer Welle der Druckmaschine (1) angebracht ist und daß eine Rechen-/Regeleinrichtung (14) die Tastsignale des Abtasters (10) den jeweiligen Winkelstellungen φist des Winkelgebers (9) zuordnet, diese Winkelstellungen mit gespeicherten Sollwerten φsoll vergleicht, bei Abweichungen Δφ Verstelldaten für eine Korrektur der Bogenankunft berechnet und diese Verstelldaten einer Verstelleinrichtung zuleitet.Device for regulating the sheet system in sheet-processing machines, in particular printing machines, the arrival of a sheet being determined by a scanner in the area of the front stops of the feed table,
characterized by
that a scanner (10) is arranged in the central region of the feed table (6), that an angle encoder (9) is attached to a shaft of the printing press (1) and that a computing / regulating device (14) detects the scanning signals of the scanner (10) the respective angular positions φ is assigned to the angle transmitter (9) , compares these angular positions with stored nominal values φ should , in the event of deviations Δφ, calculates adjustment data for correcting the arrival of the sheet, and feeds these adjustment data to an adjustment device. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß mindestens 2 Abtaster (10a, 10b) vorgesehen sind, die im wesentlichen symmetrisch zur Mitte des Anlegetisches angeordnet sind.Device according to claim 1,
characterized by
that at least 2 scanners (10a, 10b) are provided, which are arranged essentially symmetrically to the center of the feed table. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß die Rechen-/Regeleinrichtung (14), die den Tastsignalen der Abtaster (10a, 10b) zugeordneten Winkelstellungen ermittelt, bei einer Abweichung der Winkelstellungen die entsprechenden Verstelldaten für eine Schrägstellung der nachfolgenden Bogen berechnet und einem Stellmotor (16) zuleitet.Device according to claim 2,
characterized by
that the computing / regulating device (14), which determines the angular positions assigned to the scanning signals of the scanners (10a, 10b), calculates the corresponding adjustment data for an inclined position of the following sheets in the event of a deviation of the angular positions and supplies them to a servomotor (16). Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß die Rechen-/Regeleinrichtung (14) bei einer Abweichung der Winkelstellungen den Mittelwert der Winkelstellungen als Istwert φist für die Bogenankunftsgradzahl ermittelt.Device according to claim 3,
characterized by
that the computing / control unit (14) as an actual value φ with a deviation of the angular positions of the mean of the angular positions is determined for the sheet arrival number of degrees. Vorrichtung nach Anspruch 1 und 4,
dadurch gekennzeichnet,
daß die Rechen-/Regeleinrichtung (14) bei Abweichungen Δist der gemessenen bzw. berechneten Winkelstellungen von den vorgegebenen Winkelstellungen φsoll entsprechende Verstelldaten für eine Phasenverstellung berechnet und einem Stellmotor (15) zuleitet.Device according to claims 1 and 4,
characterized by
that the computing / regulating device (14) in the case of deviations Δ is the measured or calculated angular positions from the predetermined angular positions φ desired , corresponding adjustment data for a phase adjustment is calculated and fed to a servomotor (15). Vorrichtung nach Anspruch 1 und 2,
dadurch gekennzeichnet,
daß die Abtaster (10a, 10b) gleichzeitig zur Kontrolle der Bogenankunft und der Bogenanlage verwendet werden.Device according to claims 1 and 2,
characterized by
that the scanner (10a, 10b) are used simultaneously to control the arrival of the sheet and the sheet feeder. Vorrichtung nach Anspruch 1 und 2,
dadurch gekennzeichnet,
daß mittig angeordnete Abtaster (10) und symmetrisch angeordnete Abtaster (10a, 10b) wahlweise zu- oder ausgeschaltet werden.Device according to claims 1 and 2,
characterized by
that centrally arranged scanners (10) and symmetrically arranged scanners (10a, 10b) are optionally switched on or off. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Winkelgeber (9) ein Absolutgeber oder ein Inkrementalgeber ist, der mit einem Zähler verbunden ist.Device according to claim 1,
characterized by
that the angle encoder (9) is an absolute encoder or an incremental encoder which is connected to a counter. Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Rechen-/Regeleinrichtung (14) aus einer Vielzahl von Messungen, der den Tastsignalen der Abtaster (10 bzw. 10a, 10b) zugeordneten Winkelstellungen einen Mittelwert berechnet, der der Regelung als Istwert φist dient.Device according to claim 1 or 2,
characterized by
that the computing / control unit (14) from a plurality of measurements, calculates the key signals of the scanner (10, 10a, 10b) associated with the angular positions of a mean value, φ is the control as an actual value is used. Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Rechen-/Regeleinrichtung (14) die Regelung auf einen abgespeicherten Sollwert φsoll veranlaßt, wenn die durch die Abtastsignale der Abtaster (10 bzw. 10a, 10b) ermittelten Winkelstellungen außerhalb des Toleranzbereiches um den abgespeicherten Sollwert liegen.Device according to claim 1 or 2,
characterized by
that the computing / control unit (14) to φ, the control to a stored desired value caused when the scanning signals by the scanner (10, 10a, 10b) determined angular positions are outside the tolerance range around the stored reference value. Vorrichtung nach Anspruch 10,
dadurch gekennzeichnet,
daß der Toleranzbereich durch die Streuung der Meßwerte um den Mittelwert festgelegt wird.Device according to claim 10,
characterized by
that the tolerance range is determined by the scatter of the measured values around the mean value. Vorrichtung nach Anspruch 11,
dadurch gekennzeichnet,
daß Sollwert φsoll und/oder Toleranzbereich wahlweise manuell eingegeben werden.Device according to claim 11,
characterized by
that setpoint should φ and / or the tolerance range are entered either manually. Vorrichtung nach Anspruch 11,
dadurch gekennzeichnet,
daß Abweichungen Δφ von einem Sollwert φsoll der Winkelstellung akustisch signalisiert und/oder optisch am zentralen Informationsdisplay (12) eines Bedienpultes (11) angezeigt werden.Device according to claim 11,
characterized by
that deviations .DELTA..phi. from a desired value .phi. should be acoustically signaled to the angular position and / or be indicated optically on the central information display (12) of a control panel (11). Vorrichtung nach Anspruch 13,
dadurch gekennzeichnet,
daß die Abweichungen Δφ vom Sollwert φsoll und die entsprechenden Verstelldaten für die Rechen-/Regeleinrichtung (14) am zentralen Informationsdisplay (12) des Bedienpultes (11) angezeigt werden und die Regelung wahlweise manuell erfolgt.Device according to claim 13,
characterized by
that the deviations Δφ from the desired value to φ and the corresponding adjustment data for the computing / control unit (14) displays the control panel (11) on the central information display (12) and the regulation is either manually. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Rechen-/Regeleinrichtung (14) vor Druckbeginn das Papiergewicht vorgegeben wird und die Rechen-/Regeleinrichtung (14) die dem Papiergewicht zugeordnete optimale Bogenankunftsgradzahl bestimmt.Device according to claim 1,
characterized by
that the arithmetic / control device (14) is given the paper weight before the start of printing and the arithmetic / control device (14) determines the optimum sheet arrival number assigned to the paper weight. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß den Abweichungen Δφ vom Sollwert φsoll eine Geschwindigkeitskompensation überlagert wird.Device according to claim 1,
characterized by
that the deviations Δφ φ from the desired value to a speed compensation is superposed. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Rechen-/Regeleinrichtung (14) eine statistische Auswertung der Meßdaten vornimmt, und das Ergebnis dieser Auswertung mit experimentell ermittelten Daten vergleicht, wodurch sich Rückschlüsse auf die Funktionsweise einzelner am Bogenlauf beteiligter Komponenten der Druckmaschine ziehen lassen.Device according to one or more of the preceding claims,
characterized by
that the computing / regulating device (14) carries out a statistical evaluation of the measurement data, and compares the result of this evaluation with experimentally determined data, as a result of which conclusions can be drawn about the functioning of individual components of the printing press involved in sheet travel.
EP90125188A 1990-01-17 1990-12-21 Control-device for the feeding device in a sheet-processing machine, particularly for printing machine Expired - Lifetime EP0437813B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90125188T ATE96121T1 (en) 1990-01-17 1990-12-21 DEVICE FOR CONTROLLING THE SHEET FEED IN SHEET-PROCESSING MACHINES, ESPECIALLY PRINTING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4001120A DE4001120C2 (en) 1990-01-17 1990-01-17 Device for regulating the arrival of sheets in sheet-processing machines, in particular printing machines
DE4001120 1990-01-17

Publications (3)

Publication Number Publication Date
EP0437813A2 true EP0437813A2 (en) 1991-07-24
EP0437813A3 EP0437813A3 (en) 1991-10-23
EP0437813B1 EP0437813B1 (en) 1993-10-20

Family

ID=6398197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125188A Expired - Lifetime EP0437813B1 (en) 1990-01-17 1990-12-21 Control-device for the feeding device in a sheet-processing machine, particularly for printing machine

Country Status (8)

Country Link
US (1) US5096183A (en)
EP (1) EP0437813B1 (en)
JP (1) JPH04350045A (en)
CN (1) CN1018536B (en)
AT (1) ATE96121T1 (en)
AU (1) AU629085B2 (en)
CA (1) CA2032037C (en)
DE (2) DE4001120C2 (en)

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EP0644139A1 (en) * 1993-09-17 1995-03-22 MAN Roland Druckmaschinen AG Sheet feeder unit

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DE4137979B4 (en) * 1991-11-19 2004-05-06 Heidelberger Druckmaschinen Ag Drive for a printing press with at least two mechanically decoupled printing units
DE4140051C2 (en) * 1991-12-05 1996-11-07 Leuze Electronic Gmbh & Co Device for monitoring the arrival of sheets at the inlet of sheet processing machines
DE4322744C2 (en) † 1993-07-08 1998-08-27 Baumueller Nuernberg Gmbh Electrical drive system and positioning method for the synchronous adjustment of several rotatable and / or pivotable functional parts in devices and machines, drive arrangement with an angular position encoder and printing machine
DE4333071C1 (en) * 1993-09-29 1995-02-09 Roland Man Druckmasch Method and device for controlling the sheet inlet when starting a sheet-processing printing machine
DE4448000B4 (en) * 1994-01-27 2012-09-06 Heidelberger Druckmaschinen Ag Device for conveying sheets in the feeder area of a sheet-processing machine
JP3478629B2 (en) * 1994-01-27 2003-12-15 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト Apparatus for conveying a sheet in a sheet feeding area of a sheet processing machine and speed control method of electric motor
DE19508041C2 (en) * 1995-03-07 1999-05-20 Brehmer Buchbindereimaschinen Device for synchronizing the feeding of sheets
JP3127982B2 (en) * 1995-04-26 2001-01-29 リョービ株式会社 Abnormal paper detection device for printing press
DE19640963A1 (en) * 1996-10-04 1998-04-16 Wolfgang Heiber Preform feed mechanism for cartons
DE10320759B4 (en) * 2002-06-10 2013-03-14 Heidelberger Druckmaschinen Ag Transport system with position detectors in a printing machine
DE10234629A1 (en) * 2002-07-29 2004-02-19 Nexpress Solutions Llc Method and device for providing sheets in a printing press
DE10334230B4 (en) 2002-08-06 2018-05-03 Heidelberger Druckmaschinen Ag Device for correcting the position of a printed image on a sheet of a sheet-fed printing machine
JP4786138B2 (en) * 2003-09-26 2011-10-05 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト Machine for processing printed sheet
DE10356810A1 (en) * 2003-12-05 2005-07-07 Nexpress Solutions Llc Method for feeding sheets in a printing machine
DE10360168A1 (en) * 2003-12-20 2005-07-21 Rexroth Indramat Gmbh Method and device for correcting the positional deviation of a transported good
CN100381337C (en) * 2005-12-31 2008-04-16 锦州春光包装机械有限公司 Plate regulating method and regulating device for liquid filling machine
DE102007009676A1 (en) 2007-02-28 2008-09-04 Koenig & Bauer Aktiengesellschaft Alignment unit for sheets of paper on feed table of sheet-printing machine, includes optical sensors which can be moved at sheet velocity, to detect front edge of sheet
DE102007009674A1 (en) 2007-02-28 2008-09-04 Koenig & Bauer Aktiengesellschaft Arrangement for detecting position of sheet on sheet printer plate has sensor(s) pivotable from starting position to temporary position, sheet lifting device before sensor(s) in transport direction and associated with leading sheet
DE102009041227A1 (en) * 2008-09-22 2010-04-01 Heidelberger Druckmaschinen Ag Optimized register control in sheetfed presses
DE102011006113A1 (en) * 2011-03-25 2012-09-27 Kba-Metalprint Gmbh Device for applying at least one medium to at least one substrate and a method for reproducibly setting a rotational angle position of at least one first cylinder of a device
DE102022110168B3 (en) 2022-04-27 2023-05-17 Heidelberger Druckmaschinen Aktiengesellschaft Functional monitoring of conveyor belts in the printing press

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Also Published As

Publication number Publication date
DE4001120C2 (en) 1994-05-26
AU629085B2 (en) 1992-09-24
US5096183A (en) 1992-03-17
JPH04350045A (en) 1992-12-04
CA2032037C (en) 1995-05-09
CN1018536B (en) 1992-10-07
DE4001120A1 (en) 1991-07-18
AU6869291A (en) 1991-07-18
ATE96121T1 (en) 1993-11-15
CN1053408A (en) 1991-07-31
DE59003158D1 (en) 1993-11-25
EP0437813B1 (en) 1993-10-20
EP0437813A3 (en) 1991-10-23

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