EP2277811B1 - Device and method for operating a stack lifting device - Google Patents

Device and method for operating a stack lifting device Download PDF

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Publication number
EP2277811B1
EP2277811B1 EP10166267.4A EP10166267A EP2277811B1 EP 2277811 B1 EP2277811 B1 EP 2277811B1 EP 10166267 A EP10166267 A EP 10166267A EP 2277811 B1 EP2277811 B1 EP 2277811B1
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EP
European Patent Office
Prior art keywords
stack
detecting
lifting
sheet
height
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10166267.4A
Other languages
German (de)
French (fr)
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EP2277811A3 (en
EP2277811A2 (en
Inventor
Dieter Gronau
Uwe Hartstock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Masterwork Group Co Ltd
Original Assignee
Heidelberger Druckmaschinen AG
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Publication of EP2277811A2 publication Critical patent/EP2277811A2/en
Publication of EP2277811A3 publication Critical patent/EP2277811A3/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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of pile
    • B65H3/0825—Suction grippers separating from the top of pile and acting on the rear part of the articles relatively to the final separating direction
    • 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
    • B65H7/04—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 absence of articles, e.g. exhaustion of pile
    • 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
    • B65H2511/13—Thickness
    • 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
    • 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
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1313—Edges trailing edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a device and a method for controlling a Stapelhubvorses a sheet-processing machine according to the preamble of claim 1 and claim 3.
  • Such a device is known from the DE 39 15 371 A1 ,
  • a stack height in the region of the front in the conveying direction upper edge of the sheet stack contactless scanning sensor is provided, which controls the drive for the stack carrier of the sheet pile.
  • a detecting device for detecting the position of the upper sheet of a sheet stack in a sheet processing machine which communicates with a computer which controls a lifting motor of a lifting mechanism for a stack carrier.
  • a first detector unit detects the vertical position of the front edge of the sheet pile in the conveying direction and controls drive means for stacking in the feeder.
  • a second detector unit senses the altitude of the sheet stack in its rear area and controls a motor for setting a sheet feeding device, which lifts the sheets individually from the sheet stack and feeds the printing units of the machine.
  • DE 100 57 052 A1 discloses a method and apparatus according to the preamble of claims 1 and 3, respectively.
  • Object of the present invention is to propose an alternative control of a Stapelhubvorraum, which ensures a safe and fast delivery of sheets of different thickness to the processing machine. According to the invention this object is achieved by a device according to the characterizing features of claim 3 and a method with the method steps of claim 1.
  • the controller comprises two control loops.
  • the front stack top edge is monitored by a sensor.
  • the signals of the sensor are processed in a controller together with information about the machine angle at the time of measurement and are used to control a positioning for the height adjustment of the suction head.
  • the rear stack upper edge is monitored via at least one other sensor together with a pressure foot.
  • the signals of the sensor are processed in a controller together with information about the machine angle at the time of measurement and are used to adjust the speed of the Stapelhubantriebes, which had originally been calculated from the machine speed and arc thickness as the output speed.
  • This device and the corresponding method of speed control ensure a more stable process than controlling the speed of the feeder stack over the leading edge of the stack, since fluctuations in the stack trailing edge directly affect sheet separation and sheet transport.
  • FIG. 1 shows a designed as a sheet feeder 10 device for separating sheets 1, which are located on a stack of sheets 2.
  • the sheet feeder 10 is followed by a belt table 3, which supplies the separated sheet 1 of a sheet-processing machine, not shown, for example, a printing press or a punch.
  • a Stapelhubtisch 4 is arranged, which is moved over chains 5 up or down.
  • the chains 5 are connected via sprockets, not shown, with an electric motor 6, which raises or lowers the Stapelhubtisch 4.
  • On the Stapelhubtisch 4 of the sheet stack 2 is arranged.
  • a suction head 20 is arranged, which can be adjusted via a positioning drive 8 in height to the rear stack upper edge 9.
  • the suction head 20 is used for separating and conveying the sheet 1.
  • the suction head 20 separating sucker 21, which detect the top sheet 1 of each sheet stack 2, separate from the sheet stack and transferred to the suction head 20 also existing transport suction 22, the bow in Transporting the conveying direction 23.
  • the height of the rear upper edge of the sheet pile detecting means 24 is provided in the suction head, which is formed in the embodiment as a per se known Tastfuß 25.
  • the pressure foot 25 has a measuring device, for example in the form of two digital sensors 26, of which in Fig. 2 only one is shown schematically. With these, the distance of the rear stack upper edge 9 is determined to the suction head 20. With these sensors 26, three states are generated: stack too high; Target position and stack too low. At a certain machine angle, the current position to the rear stack top edge 9 is measured with the sensors 26 via the feeler foot 25. If the result differs from the desired position, the stacking table 4 is moved accordingly via the motor 6. The desired position is closely tolerated, so that the distance of the decisive elements for the sheet separation such as separating springs (not shown), sucker 21 and pressure foot 25 can be kept as constant as possible. This ensures a safe and reproducible process of sheet separation.
  • the adjustment of the front stack upper edge 30 is done via the height adjustment of the suction head 20.
  • a front edge sensor 32 provides the signals: stack too high; Target position and stack too low. According to these signals, the suction head is moved by a motor 8 in height.
  • FIG. 2 now shows the control structure.
  • the components described as controllers 60 and 61 in the following description can be designed as separate hardware modules. However, there may also be independent software building blocks in the whole machine controlling PLC 40 (Programmable Logic Control).
  • the Stapelhub thus consists of two control loops: the control loop for the Saugkopfver ein and the control circuit for the stacking stroke.
  • the desired position for the front upper edge of the stack is determined by the position of the suction head.
  • the suction head 20 can be adjusted with a positioning drive 8. This adjustment can be done manually or automatically.
  • the automatic adjustment control loop includes the following components: sensor 32 for measuring front stack top edge 30, motor 8 for adjusting the suction head height, machine angle of the sheet processing machine for measuring time determination on sensor 32 and controller 60.
  • speed-controlled servomotor 6 pressure foot 25, two sensors 26 for detecting the position of the pressure foot 25 (the components 25 and 26 are installed in the suction head 20), return main drive 17 (this shows the production speed of the sheet-processing Machine).
  • speed control the values arc thickness 15 and current machine angle 16 are used from the process.
  • the speed of the lifting motor 6 is calculated in the controller 61.
  • the motor lifts the stack at the calculated speed.
  • the current position of the stack top edge is measured with the sensors 26 via the feeler foot 20. If the result deviates from the nominal position, the calculated rotational speed is adjusted in order to keep the position of the rear stack upper edge constant. This algorithm is repeated after each signature removed to keep the stack top on the stylus 20 in the ideal position.

Landscapes

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

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Steuerung einer Stapelhubvorrichtung einer bogenverarbeitenden Maschine gemäß dem Oberbegriff von Anspruch 1 bzw. Anspruch 3.The invention relates to a device and a method for controlling a Stapelhubvorrichtung a sheet-processing machine according to the preamble of claim 1 and claim 3.

Bekannt ist eine derartige Vorrichtung aus der DE 39 15 371 A1 . Bei dieser bekannten Vorrichtung ist ein die Stapelhöhe im Bereich der in Förderrichtung vorderen Oberkante des Bogenstapels berührungslos abtastender Sensor vorgesehen, der den Antrieb für den Stapelträger des Bogenstapels steuert. Durch diesen Sensor kann bei niedrigerer Höhenlage der Stapeloberfläche als einer bestimmten Sollhöhenlage die eine Hubbewegung bewirkende Vorrichtung den Stapeltisch anhebend ansteuerbar oder bei höherer Höhenlage der Stapeloberfläche als einer vorbestimmten Sollhöhenlage die eine Hubbewegung bewirkende Vorrichtung den Stapeltisch senkend ansteuerbar sein.Such a device is known from the DE 39 15 371 A1 , In this known device, a stack height in the region of the front in the conveying direction upper edge of the sheet stack contactless scanning sensor is provided, which controls the drive for the stack carrier of the sheet pile. By this sensor, at lower altitudes of the stack surface than a certain target height position causing a lifting device lifting the stacking table controllable or at higher altitudes of the stack surface as a predetermined target height position the lifting movement effecting device the stacking table be controlled lowering.

Aus der DE 34 11 886 ist eine Detektoreinrichtung zum Feststellen der Lage des oberen Bogens eines Bogenstapels in einer bogenverarbeitenden Maschine bekannt, die mit einem Rechner in Verbindung steht, welcher einen Gebtriebemotor eines Hubwerks für einen Stapelträger steuert. Dabei ertastet eine erste Detektoreinheit die Höhenlage der in Förderrichtung vorderen Kante des Bogenstapels und steuert Antriebsmittel zur Stapelnachführung im Anleger. Eine zweite Detektoreinheit ertastet die Höhenlage des Bogenstapels in seinem hinteren Bereich und steuert einen Motor zur Einstellung einer Bogenanlegeeinrichtung, die die Bogen einzeln vom Bogenstapel abhebt und den Druckwerken der Maschine zuführt. DE 100 57 052 A1 offenbart ein Verfahren bzw. eine Vorrichtung gemäß dem Oberbegriff von Anspruch 1 bzw. 3.From the DE 34 11 886 a detecting device for detecting the position of the upper sheet of a sheet stack in a sheet processing machine is known, which communicates with a computer which controls a lifting motor of a lifting mechanism for a stack carrier. In this case, a first detector unit detects the vertical position of the front edge of the sheet pile in the conveying direction and controls drive means for stacking in the feeder. A second detector unit senses the altitude of the sheet stack in its rear area and controls a motor for setting a sheet feeding device, which lifts the sheets individually from the sheet stack and feeds the printing units of the machine. DE 100 57 052 A1 discloses a method and apparatus according to the preamble of claims 1 and 3, respectively.

Aufgabe der vorliegenden Erfindung ist es, eine alternative Steuerung einer Stapelhubvorrichtung vorzuschlagen, die eine sichere und schnelle Zuführung von Bögen unterschiedlicher Dicke zur weiterverarbeitenden Maschine gewährleistet. Erfindungsgemäß wird diese Aufgabe gelöst durch eine Vorrichtung gemäß den kennzeichnenden Merkmalen von Anspruch 3 und einem Verfahren mit den Verfahrensschritten von Anspruch 1.Object of the present invention is to propose an alternative control of a Stapelhubvorrichtung, which ensures a safe and fast delivery of sheets of different thickness to the processing machine. According to the invention this object is achieved by a device according to the characterizing features of claim 3 and a method with the method steps of claim 1.

In einer bevorzugten Ausführungsform umfasst die Steuerung zwei Regelkreise. Zum einen wird über einen Sensor die vordere Stapeloberkante überwacht. Die Signale des Sensors werden in einem Regler zusammen mit einer Information über den Maschinenwinkel zum Messzeitpunkt verarbeitet und dienen zur Steuerung einer Positioniereinheit für die Höhenverstellung des Saugkopfes. Zum anderen wird über mindestens einen weiteren Sensor zusammen mit einem Tastfuß die hintere Stapeloberkante überwacht. Die Signale des Sensors werden in einem Regler zusammen mit einer Information über den Maschinenwinkel zum Messzeitpunkt verarbeitet und dienen zur Anpassung der Drehzahl des Stapelhubantriebes, welche ursprünglich aus Maschinengeschwindigkeit und Bogendicke als Ausgangsdrehzahl berechnet worden war.In a preferred embodiment, the controller comprises two control loops. On the one hand, the front stack top edge is monitored by a sensor. The signals of the sensor are processed in a controller together with information about the machine angle at the time of measurement and are used to control a positioning for the height adjustment of the suction head. On the other hand, the rear stack upper edge is monitored via at least one other sensor together with a pressure foot. The signals of the sensor are processed in a controller together with information about the machine angle at the time of measurement and are used to adjust the speed of the Stapelhubantriebes, which had originally been calculated from the machine speed and arc thickness as the output speed.

Hierdurch wird gewährleistet, dass die Position der hinteren Stapeloberkante konstant gehalten wird. Diese Vorrichtung und das entsprechende Verfahren der Geschwindigkeitsregelung sichern einen stabileren Prozess als die Regelung der Geschwindigkeit des Anlegerstapels über die Stapelvorderkante, da Schwankungen an der Stapelhinterkante direkt Einfluss haben auf die Bogenvereinzelung und den Bogentransport.This ensures that the position of the rear stack top edge is kept constant. This device and the corresponding method of speed control ensure a more stable process than controlling the speed of the feeder stack over the leading edge of the stack, since fluctuations in the stack trailing edge directly affect sheet separation and sheet transport.

Die Erfindung wird im Folgenden an einem Ausführungsbeispiel näher erläutert. Es zeigen:

Fig. 1
Einen Bogenanleger mit Stapelhubvorrichtung in einer Seitenansicht
Fig. 2
Blockschema der Steuerung der Stapelhubvorrichtung.
The invention will be explained in more detail below using an exemplary embodiment. Show it:
Fig. 1
A sheet feeder with Stapelhubvorrichtung in a side view
Fig. 2
Block diagram of the control of Stapelhubvorrichtung.

Figur 1 zeigt eine als Bogenanleger 10 ausgebildete Vorrichtung zum Vereinzeln von Bogen 1, die sich auf einem Bogenstapel 2 befinden. Dem Bogenanleger 10 ist ein Bändertisch 3 nachgeordnet, der die vereinzelten Bogen 1 einer nicht näher dargestellten bogenverarbeitenden Maschine, beispielsweise einer Druckmaschine oder einer Stanze zuführt. FIG. 1 shows a designed as a sheet feeder 10 device for separating sheets 1, which are located on a stack of sheets 2. The sheet feeder 10 is followed by a belt table 3, which supplies the separated sheet 1 of a sheet-processing machine, not shown, for example, a printing press or a punch.

Im Bogenanleger 10 ist ein Stapelhubtisch 4 angeordnet, der über Ketten 5 nach oben oder unten bewegt wird. Die Ketten 5 sind über nicht dargestellte Kettenräder mit einem Elektromotor 6 verbunden, der den Stapelhubtisch 4 anhebt oder absenkt. Auf dem Stapelhubtisch 4 ist der Bogenstapel 2 angeordnet. Über dem Bogenstapel 2 ist ein Saugkopf 20 angeordnet, der über einen Positionierantrieb 8 in seiner Höhe zur hinteren Stapeloberkante 9 verstellt werden kann. Der Saugkopf 20 dient zum Vereinzeln und Fördern der Bogen 1. Dazu weist der Saugkopf 20 Trennsauger 21 auf, die den jeweils obersten Bogen 1 des Bogenstapels 2 erfassen, vom Bogenstapel trennen und an im Saugkopf 20 ebenfalls vorhandene Transportsauger 22 übergeben, die den Bogen in Förderrichtung 23 transportieren. Weiterhin ist im Saugkopf eine die Höhenlage der hinteren Oberkante des Bogenstapels erfassende Einrichtung 24 vorgesehen, die im Ausführungsbeispiel als ein an sich bekannter Tastfuß 25 ausgebildet ist. Der Tastfuß 25 verfügt über eine Messvorrichtung, beispielsweise in Form von zwei digitalen Sensoren 26, von denen in Fig. 2 nur einer schematisch dargestellt ist. Mit diesen wird die Entfernung der hinteren Stapeloberkante 9 zum Saugkopf 20 ermittelt. Mit diesen Sensoren 26 werden drei Zustände generiert: Stapel zu hoch; Sollposition und Stapel zu tief. Bei einem bestimmten Maschinenwinkel wird mit den Sensoren 26 über den Tastfuß 25 die aktuelle Position zur hinteren Stapeloberkante 9 gemessen. Weicht das Ergebnis von der Sollposition ab, wird der Stapeltisch 4 über den Motor 6 entsprechend verfahren. Die Sollposition ist eng toleriert, damit der Abstand der entscheidenden Elemente für die Bogenvereinzelung wie Trennfedern (nicht dargestellt), Sauger 21 und Tastfuß 25 möglichst konstant gehalten werden kann. Dies gewährleistet einen sicheren und reproduzierbaren Prozess der Bogenvereinzelung.In the sheet feeder 10 a Stapelhubtisch 4 is arranged, which is moved over chains 5 up or down. The chains 5 are connected via sprockets, not shown, with an electric motor 6, which raises or lowers the Stapelhubtisch 4. On the Stapelhubtisch 4 of the sheet stack 2 is arranged. About the sheet stack 2, a suction head 20 is arranged, which can be adjusted via a positioning drive 8 in height to the rear stack upper edge 9. The suction head 20 is used for separating and conveying the sheet 1. For this purpose, the suction head 20 separating sucker 21, which detect the top sheet 1 of each sheet stack 2, separate from the sheet stack and transferred to the suction head 20 also existing transport suction 22, the bow in Transporting the conveying direction 23. Furthermore, the height of the rear upper edge of the sheet pile detecting means 24 is provided in the suction head, which is formed in the embodiment as a per se known Tastfuß 25. The pressure foot 25 has a measuring device, for example in the form of two digital sensors 26, of which in Fig. 2 only one is shown schematically. With these, the distance of the rear stack upper edge 9 is determined to the suction head 20. With these sensors 26, three states are generated: stack too high; Target position and stack too low. At a certain machine angle, the current position to the rear stack top edge 9 is measured with the sensors 26 via the feeler foot 25. If the result differs from the desired position, the stacking table 4 is moved accordingly via the motor 6. The desired position is closely tolerated, so that the distance of the decisive elements for the sheet separation such as separating springs (not shown), sucker 21 and pressure foot 25 can be kept as constant as possible. This ensures a safe and reproducible process of sheet separation.

Die Einstellung der vorderen Stapeloberkante 30 geschieht über die Höhenverstellung des Saugkopfes 20. Ein Vorderkantensensor 32 liefert die Signale: Stapel zu hoch; Sollposition und Stapel zu tief. Entsprechend dieser Signale wird der Saugkopf über einen Motor 8 in der Höhe verfahren.The adjustment of the front stack upper edge 30 is done via the height adjustment of the suction head 20. A front edge sensor 32 provides the signals: stack too high; Target position and stack too low. According to these signals, the suction head is moved by a motor 8 in height.

Figur 2 zeigt nun den Steuerungsaufbau. Die in der folgenden Beschreibung als Regler 60 und 61 beschriebenen Komponenten können als separate Hardwaremodule ausgebildet sein. Es können jedoch auch unabhängige Softwarebausteine in der, die gesamte Maschine steuernden SPS 40 (Speicherprogrammierbare Steuerung) sein. Die Stapelhubsteuerung besteht somit aus zwei Regelkreisen: dem Regelkreis für die Saugkopfverstellung und dem Regelkreis für den Stapelhub. FIG. 2 now shows the control structure. The components described as controllers 60 and 61 in the following description can be designed as separate hardware modules. However, there may also be independent software building blocks in the whole machine controlling PLC 40 (Programmable Logic Control). The Stapelhubsteuerung thus consists of two control loops: the control loop for the Saugkopfverstellung and the control circuit for the stacking stroke.

Die Sollposition für die vordere Oberkante des Stapels wird durch die Lage des Saugkopfes bestimmt. Der Saugkopf 20 kann mit einem Positionierantrieb 8 verstellt werden. Diese Verstellung kann manuell oder automatisiert erfolgen. Im Regelkreis für die automatisierte Verstellung befinden sich folgend Komponenten: Sensor 32 zur Messung der vorderen Stapeloberkante 30, Motor 8 zur Verstellung der Saugkopfhöhe, Maschinenwinkel der bogenverarbeitenden Maschine zur Messzeitbestimmung am Sensor 32 und der Regler 60.The desired position for the front upper edge of the stack is determined by the position of the suction head. The suction head 20 can be adjusted with a positioning drive 8. This adjustment can be done manually or automatically. The automatic adjustment control loop includes the following components: sensor 32 for measuring front stack top edge 30, motor 8 for adjusting the suction head height, machine angle of the sheet processing machine for measuring time determination on sensor 32 and controller 60.

Nach jedem entnommenen Bogen wird bei einem bestimmten Maschinenwinkel die Abweichung der Stapeloberkante von der Idealposition (einem fest eingestellten Toleranzfenster zur Bogenklappenoberkante) mit dem Sensor 32 gemessen und über den Regler 60 der Saugkopf 20 in seiner Höhe verfahren.After each sheet is taken at a certain machine angle, the deviation of the stack top edge of the ideal position (a fixed tolerance window for arc top edge) measured by the sensor 32 and moved over the regulator 60 of the suction head 20 in its height.

Im Regelkreis für den Stapelhub sind folgende Komponenten enthalten: drehzahlgeregelter Servomotor 6, Tastfuß 25, zwei Sensoren 26 zur Erkennung der Position des Tastfußes 25 (die Komponenten 25 und 26 sind im Saugkopf 20 eingebaut), Rückführung Hauptantrieb 17 (dieser zeigt die Produktionsgeschwindigkeit der bogenverarbeitenden Maschine). Für die Geschwindigkeitsregelung werden aus dem Prozess noch die Werte Bogendicke 15 und aktueller Maschinenwinkel 16 genutzt.In the control cycle for the stacking stroke, the following components are included: speed-controlled servomotor 6, pressure foot 25, two sensors 26 for detecting the position of the pressure foot 25 (the components 25 and 26 are installed in the suction head 20), return main drive 17 (this shows the production speed of the sheet-processing Machine). For the speed control, the values arc thickness 15 and current machine angle 16 are used from the process.

Aus der Maschinengeschwindigkeit 17 und der Bogendicke 15 wird im Regler 61 die Drehzahl des Hubmotors 6 berechnet. Werden nun Bogen vom Stapel abgenommen, hebt der Motor den Stapel mit der berechneten Geschwindigkeit an. Bei einem bestimmten Maschinenwinkel wird mit den Sensoren 26 über den Tastfuß 20 die aktuelle Position der Stapeloberkante gemessen. Weicht das Ergebnis von der Sollposition ab, wird die berechnete Drehzahl angepasst, um die Position der hinteren Stapeloberkante konstant zu halten. Dieser Algorithmus wird nach jedem abgenommenen Bogen wiederholt, um die Stapeloberkante am Tastfuß 20 in der Idealposition zu halten.From the machine speed 17 and the sheet thickness 15, the speed of the lifting motor 6 is calculated in the controller 61. When sheets are removed from the stack, the motor lifts the stack at the calculated speed. At a certain machine angle, the current position of the stack top edge is measured with the sensors 26 via the feeler foot 20. If the result deviates from the nominal position, the calculated rotational speed is adjusted in order to keep the position of the rear stack upper edge constant. This algorithm is repeated after each signature removed to keep the stack top on the stylus 20 in the ideal position.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Bogenarc
22
Bogenstapelsheet pile
33
Bändertischbelt table
44
StapelhubtischStapelhubtisch
55
KetteChain
66
Elektromotorelectric motor
88th
Positionierantriebpositioning
99
hintere Stapeloberkanterear stack top
1010
Bogenanlegersheet feeder
1515
Bogendickesheet thickness
1616
Maschinenwinkelmachine angle
1717
Maschinengeschwindigkeitmachine speed
2020
Saugkopfsuction head
2121
Trennsaugersuction separator
2222
Transportsaugertransport sucker
2323
Förderrichtungconveying direction
2424
Messeinrichtungmeasuring device
2525
Tastfußpressure foot
2626
Sensorsensor
3030
vordere Stapeloberkantefront stack top
3232
Sensorsensor
4040
SPSSPS
6060
Reglerregulator
6161
Reglerregulator

Claims (6)

  1. Method of controlling a stack-lifting device for sheet-processing machines including a mechanism (4, 5) for lifting a stack (2) including a stack lifting drive (6), and means (32) for detecting the front height (30) of the stack, and a height-adjustable suction head (20) having means for separating (21) and conveying (22) the sheets (1) as well as means (25, 26) for detecting the rear upper edge (9) of the stack,
    characterized by
    the following steps of
    a) calculating the rotary speed of the stack-lifting drive (6) from the machine speed (17) and the sheet thickness (15) in a controller (61); and thus the stack lifting speed;
    b) lifting the stack (2) at the speed that has been calculated in accordance with a);
    c) measuring the current position of the rear upper edge (9) by means of the sensors (26) and the tracer foot (25) at a specified machine angle (16);
    d) adapting the calculated rotary speed if the measurement in accordance with c) finds a deviation from the intended position;
    e) measuring the front upper edge (30) of the stack by means of the sensor (32) at a specified machine angle (16) in a controller (60);
    f) adapting the suction head height if the measurement in accordance with e) has found a deviation from the intended position;
    g) repeating steps c) to f).
  2. Method according to claim 1,
    characterized in
    that the repetition in accordance with g) occurs every time a sheet (1) has been taken from the stack (2).
  3. Device for controlling a stack-lifting device in a sheet-processing machine comprising a mechanism (4, 5) for lifting a stack (2) including a stack lifting drive (6), and means (32) for detecting the front height (30) of the stack, and a height-adjustable suction head (20) including means for separating (21) and conveying (22) the sheets (1) as well as means (25, 26) for detecting the rear upper edge (9) of the stack,
    characterized in
    that the means (32) for detecting the front height of the stack (9) send signals to a control unit (40), which, based on these signals together with information on the machine angle as a measuring time, provides control signals to a controller (60) for controlling a positioning drive (8) for adjusting the height of the suction head (20) and
    in that the means (25, 26) for detecting the rear upper edge (9) of the stack provide digital signals to a control unit (40), which, based on these signals together with information on the sheet thickness (15), the machine angle at the time of the measurement (16) and the machine speed, provides control signals to a controller (61) for controlling the stack lifting drive (6).
  4. Device according to claim 3,
    characterized in
    that the means (32) for detecting the front height of the stack comprise a sensor that provides analogue signals.
  5. Device according to claim 3,
    characterized in
    that the means (32) for detecting the front height of the stack comprise a sensor that provides digital signals.
  6. Device according to claim 4,
    characterized in
    that in the control unit (40), the analogue signals are converted to digital signals for the controller (60).
EP10166267.4A 2009-07-22 2010-06-17 Device and method for operating a stack lifting device Active EP2277811B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009034482A DE102009034482A1 (en) 2009-07-22 2009-07-22 Apparatus and method for controlling a Stapelhubvorrichtung

Publications (3)

Publication Number Publication Date
EP2277811A2 EP2277811A2 (en) 2011-01-26
EP2277811A3 EP2277811A3 (en) 2013-01-02
EP2277811B1 true EP2277811B1 (en) 2019-01-23

Family

ID=43014271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10166267.4A Active EP2277811B1 (en) 2009-07-22 2010-06-17 Device and method for operating a stack lifting device

Country Status (4)

Country Link
EP (1) EP2277811B1 (en)
CN (1) CN101962128B (en)
DE (1) DE102009034482A1 (en)
ES (1) ES2712492T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103738749B (en) * 2013-12-31 2016-08-17 温康纳(常州)机械制造有限公司 A kind of thin plate board separator structure
JP6573168B2 (en) * 2015-10-30 2019-09-11 日本電気硝子株式会社 Sheet glass manufacturing method and manufacturing apparatus
CN108820945B (en) * 2018-06-15 2020-05-05 南通大学 Automatic film feeding device
DE102019127855A1 (en) * 2018-11-27 2020-05-28 Heidelberger Druckmaschinen Ag Process for changing stacks formed from sheets in a feeder

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH651807A5 (en) 1983-03-31 1985-10-15 Bobst Sa DEVICE FOR CONTROLLING ORGANS DELIVERING SHEETS TAKEN FROM A CELL TO A MACHINE WORKING THEREWITH.
DE3915371C2 (en) 1989-05-11 1995-05-24 Roland Man Druckmasch Device for controlling the lifting movement of a stacking table
DE4410384C1 (en) * 1994-03-25 1995-05-24 Roland Man Druckmasch Control for stack lift device
DE19620937B4 (en) * 1996-05-24 2004-08-05 Man Roland Druckmaschinen Ag sheet feeder
DE10057052B4 (en) * 1999-12-23 2009-12-24 Heidelberger Druckmaschinen Ag Method for controlling or regulating the height position of stacked sheets
DE20203617U1 (en) * 2002-03-06 2002-05-16 Roland Man Druckmasch Stapelhubantrieb
DE102008041376A1 (en) * 2008-08-20 2010-02-25 Manroland Ag Sheet feeder, has stack receptacle carrying sheet stack, and suction head vertically adjustable by adjusting unit, which is controlled by signals of sensor, where upper stack front edge of stack is scanned by sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2277811A3 (en) 2013-01-02
DE102009034482A1 (en) 2011-01-27
EP2277811A2 (en) 2011-01-26
CN101962128B (en) 2015-07-22
CN101962128A (en) 2011-02-02
ES2712492T3 (en) 2019-05-13

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