EP0261354A1 - Sheet feeder and layer - Google Patents

Sheet feeder and layer Download PDF

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Publication number
EP0261354A1
EP0261354A1 EP87111137A EP87111137A EP0261354A1 EP 0261354 A1 EP0261354 A1 EP 0261354A1 EP 87111137 A EP87111137 A EP 87111137A EP 87111137 A EP87111137 A EP 87111137A EP 0261354 A1 EP0261354 A1 EP 0261354A1
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EP
European Patent Office
Prior art keywords
gripper
coil
sheet feeder
sheet
resonant circuit
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
EP87111137A
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German (de)
French (fr)
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EP0261354B1 (en
Inventor
Peter Geiser
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.)
Grapha Holding AG
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Grapha Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grapha Holding AG filed Critical Grapha Holding AG
Priority to AT87111137T priority Critical patent/ATE48823T1/en
Publication of EP0261354A1 publication Critical patent/EP0261354A1/en
Application granted granted Critical
Publication of EP0261354B1 publication Critical patent/EP0261354B1/en
Expired legal-status Critical Current

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    • 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
    • B65H3/085—Suction grippers separating from the bottom of pile
    • B65H3/0858—Suction grippers separating from the bottom of pile this action resulting merely in a curvature of each article being separated
    • B65H3/0875—Suction grippers separating from the bottom of pile this action resulting merely in a curvature of each article being separated the final separation being performed by mechanical grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/12—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 double feed or separation

Definitions

  • the present invention relates to a sheet feeder according to the preamble of claim 1.
  • the object of the present invention is to improve a sheet feeder of the type mentioned in such a way that it can be built more easily at a higher speed of the gripper drum.
  • a swivel shaft 7, to which a gripper 8 is attached is controlled parallel to the shaft 6 and is controlled by cam discs (not shown, fixedly mounted).
  • the gripper 8 detects the fold of the lowermost sheet that is pivoted downward and pulls it out of the magazine 1 through the gap 4.
  • the gripper 8 releases the sheet again in order to throw it onto a support table to a conveyor line or to pass it on to spreading drums (not shown).
  • the coil 10 is part of an oscillating circuit 11 which is arranged in the gripper drum 5 and rotates with it, which also has a capacitance 12 and a close one of the gripper drum periphery lying coil 13.
  • the resonant circuit 11 in turn is part of an LC oscillator, which further has an active part 15 with a coil 14 and the electronics 16 that can be connected to an energy source.
  • the inductance of the coil 10 or the oscillating circuit 11 changes.
  • the periphery of the gripper drum 5 is opposite the stationary coil 14, which is in transformer-operative connection with the rotating coil 13 of the oscillating circuit 11 forms a linear transformer and on the one hand signals its changes in inductance to an evaluator 17 and on the other hand excites the resonant circuit 11.
  • a separate coil can be provided in addition to the coil 14, so that the coil 14 only acts as a signal receiver, which is in contactless connection with the coil 13.
  • the evaluator 17 has processing electronics 18 for the signals received by the coil 14 and an evaluation electronics 19 which controls an interrupter, not shown, of the feeder drive.
  • the gripper 8 detects a single sheet 10, its swivel position corresponds to a target value which corresponds to a correct sheet placement. However, if the gripper 8 misses the swung-out arch fold in the first swivel position or if the suction device 3 swivels two arch folds simultaneously into the effective range of the gripper drum 5, its swivel position is different from the target value. This changes the immersion depth of the iron core 9 and the inductance of the resonant circuit 11. Such a deviation from the target value is signaled and generated by the coil 13 of the coil 14 a stop signal in the evaluator 17, which interrupts the feeder drive, so that the signaled incorrect filing can be remedied by an operator.
  • the coil 10 could be omitted, the sensor 9 (instead of the soft iron pin) being a plate-shaped medium which engages between the plates of the capacitor 12 and whose capacitance changes with the immersion depth.
  • the electronics 16 essentially have an amplifier 20 with variable gain, an amplitude control 21 and a compensation coil 24 with the inductance L1, which is equal to the inductance L2 of the coil 14.
  • the impedance difference between the two coils 10, 24 is proportional to the impedance of the LC resonant circuit 11.
  • the processing electronics 18 belonging to the evaluator 17 consist of a frequency counter and the evaluation electronics 19 consist of a comparator, preferably a microprocessor, which triggers a signal when the counting result deviates from a setpoint or setpoint range.
  • a binary-coded disk which can be displaced with the gripper 8 is mounted on the gripper drum 5.
  • the fixed signal receiver which replaces the coil 14, would consist of at least one light guide with an optoelectronic converter. The converter would be activated once with each machine cycle, at the moment at which the reading points of the coded disk lie opposite the end of the light guide (s).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Window Of Vehicle (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Collation Of Sheets And Webs (AREA)

Abstract

Successive sheets are drawn from a magazine by a gripper which is movably mounted on a drum-shaped rotary conveyor and serves to transfer successive sheets into a gathering machine. The position of the gripper with reference to the conveyor is indicative of the thickness of the sheet or sheets which are transported from the magazine, and such position is ascertained by a monitoring device in cooperation with an input element which is movable with the gripper. The input element can constitute a soft iron core which extends into a coil of an oscillatory circuit constituting the monitoring device, a plate which extends between the plates of a capacitor forming part of the monitoring device, or an arm for a disc bearing encoded information which is monitored by a photoelectronic transducer. The monitoring device transmits signals to a circuit which is adjacent the path of movement of the gripper and includes the transducer or a winding cooperating with a winding of the oscillatory circuit. Signals from the winding or from the transducer are processed by an evaluating circuit and are used to regulate the speed of the conveyor.

Description

Die vorliegende Erfindung bezieht sich auf einen Bogenanleger gemäss dem Oberbegriff des Anspruches 1.The present invention relates to a sheet feeder according to the preamble of claim 1.

Bei solchen Bogenanlegern ist es bekannt, die Dicke der jeweils abgezogenen Druckbogen zu prüfen, damit Fehl- oder Doppelbogenablagen festgestellt und die Maschine still gesetzt werden kann, damit keine fehlerhaften Druckerzeugnisse in die nachfolgenden Verarbeitungsprozesse eingegeben werden. Das Messen der Dicke der abgezogenen Druckbogen erfolgt nach bekannter Art mit einer zwischen den beiden Drehlagen an den Umfang der Greifertrommel anliegenden Tastrolle. Bei hoher Umfangsgeschwindigkeit der Greifertrommel muss die Tastrolle mit vergleichsweise grosser Kraft gegen deren Umfang angestellt werden, was Beschädigungen der Druckbogen zur Folge haben kann. Weiter ist die Verwendung einer Tastrolle als Fühler konstruktiv aufwendig, da Tastrolle und Greifertrommel gegenseitig schwingungs- und biegesteif gelagert sein müssen.In the case of such sheet feeders, it is known to check the thickness of the printed sheets drawn off so that faulty or double-sheet deposits are ascertained and the machine can be shut down so that no faulty printed products are entered into the subsequent processing processes. The thickness of the printed sheets removed is measured in a known manner with a feeler roller lying between the two rotational positions on the circumference of the gripper drum. If the gripper drum has a high peripheral speed, the sensing roller must be turned against its circumference with comparatively great force, which can damage the printed sheets. Furthermore, the use of a feeler roller as a sensor is structurally complex, since the feeler roller and gripper drum must be mutually supported in a vibration and bending resistant manner.

Die vorliegende Erfindung stellt sich die Aufgabe einen Bogenanleger der erwähnten Art derart zu verbessern, dass er bei höherer Drehzahl der Greifertrommel leichter gebaut werden kann.The object of the present invention is to improve a sheet feeder of the type mentioned in such a way that it can be built more easily at a higher speed of the gripper drum.

Anhand der beiliegenden schematischen Zeichnung wird die Erfindung beispielsweise erläutert. Es zeigen:

  • Fig. 1 ein Bogenanleger und
  • Fig. 2 ein Schema zu einem Oszillator.
The invention is explained, for example, with the aid of the attached schematic drawing. Show it:
  • Fig. 1 is a sheet feeder and
  • Fig. 2 is a diagram of an oscillator.

Erfindungsgemäss wird diese Aufgabe gelöst durch die kennzeichnenden Merkmale des Anspruches 1.According to the invention, this object is achieved by the characterizing features of claim 1.

Anhand der beiliegenden schematischen Zeichnung wird die Erfindung beispielsweise erläutert.The invention is explained, for example, with the aid of the attached schematic drawing.

Vom in der Zeichnung gezeigten Bogenanleger sind nur die für das Verständnis der Erfindung notwendigen Teile gezeigt. Solche Bogenanleger sind beispielsweise in der CH-PS 408 065 (= US-PS 3 199 862) bzw. CH-PS 586 611 (= US-PS 4 085 927) beschrieben. Im Anlegermagazin 1 sind die abzulegenden Druckbogen 2 aufeinander gestapelt. Der Falz des jeweils untersten Druckbogens wird durch auf- und abschwenkbare Sauger 3 durch einen Spalt 4 nach unten in den Wirkbereich der in Pfeilrichtung drehenden Greifertrommel 5 gebogen, welche drehfest auf einer Antriebswelle 6 sitzt. In der Greifertrommel 5 ist parallel zur Welle 6 eine von nicht dargestellten, ortsfest gelagerten Kurvenscheiben gesteuerte Schwenkwelle 7 gelagert, an der ein Greifer 8 befestigt ist. In einer ersten Drehlage der Greifertrommel 5 erfasst der Greifer 8 den nach unten geschwenkten Falz des untersten Druckbogens und zieht ihn durch den Spalt 4 aus dem Magazin 1 heraus. In einer zweiten Drehlage, nach einer Drehung der Greifertrommel 5 zwischen 120° und 270°, gibt der Greifer 8 den Bogen wieder frei, um ihn auf einen Auflagetisch zu einer Förderstrecke abzuwerfen oder an nicht dargestellte Spreiztrommeln weiterzugeben. Mit der Schwenkwelle 7 ist weiter ein Fühler 9 in Form eines weichmagnetischen Topfs, z.B. eines Weicheisenkernes fest verbunden, der je nach der Schwenklage der Schwenkwelle 7 mehr oder weniger tief in eine Spule 10 eintaucht. Die Spule 10 ist Teil eines in der Greifertrommel 5 angeordneten und mitrotierenden Schwingkreises 11, der weiter eine Kapazität 12 und eine nahe der Greifertrommelperipherie liegende Spule 13 mitumfasst. Der Schwingkreis 11 seinerseits ist Teil eines LC-Oszillators, der weiter einen an einer Energiequelle anschliessbaren Aktivteil 15 mit einer Spule 14 und der Elektronik 16 aufweist. Je nach der Schwenklage der Schwenkwelle 7 bzw. der Eintauchtiefe des Eisenkerns 9 ändert sich die Induktivität der Spule 10 bzw. des Schwingkreises 11. Der Peripherie der Greifertrommel 5 gegenüber liegt die ortsfeste Spule 14, die in transformatorischer Wirkverbindung mit der drehenden Spule 13 des Schwingkreises 11 einen linearen Übertrager bildet und einerseits dessen Induktivitätsänderungen einem Auswerter 17 signalisiert und anderseits den Schwingkreis 11 anregt. Für das Anregen des Schwingkreises 11 kann nebst der Spule 14 eine gesonderte Spule vorgesehen sein, so dass die Spule 14 lediglich als Signalempfänger wirkt, der in berührungsloser Verbindung mit der Spule 13 steht. Der Auswerter 17 weist eine Aufbereitungselektronik 18 für die von der Spule 14 empfangenen Signale und eine Auswertelektronik 19 auf, welche einen nicht dargestellten Unterbrecher des Anlegerantriebs steuert.Of the sheet feeder shown in the drawing, only the parts necessary for understanding the invention are shown. Such sheet feeders are described for example in CH-PS 408 065 (= US-PS 3 199 862) or CH-PS 586 611 (= US-PS 4 085 927). In the feeder magazine 1, the printed sheets 2 to be deposited are stacked on top of one another. The fold of the lowest printing sheet in each case is bent by suction cups 3 which can be swiveled up and down through a gap 4 down into the effective area of the gripper drum 5 which rotates in the direction of the arrow and which is non-rotatably seated on a drive shaft 6. In the gripper drum 5, a swivel shaft 7, to which a gripper 8 is attached, is controlled parallel to the shaft 6 and is controlled by cam discs (not shown, fixedly mounted). In a first rotational position of the gripper drum 5, the gripper 8 detects the fold of the lowermost sheet that is pivoted downward and pulls it out of the magazine 1 through the gap 4. In a second rotational position, after a rotation of the gripper drum 5 between 120 ° and 270 °, the gripper 8 releases the sheet again in order to throw it onto a support table to a conveyor line or to pass it on to spreading drums (not shown). A sensor 9 in the form of a soft magnetic pot, for example a soft iron core, is also firmly connected to the swivel shaft 7 and, depending on the swivel position of the swivel shaft 7, dips more or less deeply into a coil 10. The coil 10 is part of an oscillating circuit 11 which is arranged in the gripper drum 5 and rotates with it, which also has a capacitance 12 and a close one of the gripper drum periphery lying coil 13. The resonant circuit 11 in turn is part of an LC oscillator, which further has an active part 15 with a coil 14 and the electronics 16 that can be connected to an energy source. Depending on the swivel position of the swivel shaft 7 or the immersion depth of the iron core 9, the inductance of the coil 10 or the oscillating circuit 11 changes. The periphery of the gripper drum 5 is opposite the stationary coil 14, which is in transformer-operative connection with the rotating coil 13 of the oscillating circuit 11 forms a linear transformer and on the one hand signals its changes in inductance to an evaluator 17 and on the other hand excites the resonant circuit 11. For the excitation of the resonant circuit 11, a separate coil can be provided in addition to the coil 14, so that the coil 14 only acts as a signal receiver, which is in contactless connection with the coil 13. The evaluator 17 has processing electronics 18 for the signals received by the coil 14 and an evaluation electronics 19 which controls an interrupter, not shown, of the feeder drive.

Erfasst der Greifer 8 einen einzigen Bogen 10, so entspricht seine Schwenklage einem Sollwert der einer korrekten Bogenablage entspricht. Verfehlt der Greifer 8 jedoch in der ersten Schwenklage den abgeschwenkten Bogenfalz oder schwenkt der Sauger 3 zwei Bogenfalze gleichzeitig in den Wirkbereich der Greifertrommel 5, so ist seine Schwenklage verschieden vom Sollwert. Hiermit ändern sich die Eintauchtiefe des Eisenkerns 9 und die Induktivität des Schwingkreises 11. Eine solche Abweichung vom Sollwert wird von der Spule 13 der Spule 14 signalisiert und erzeugt im Auswerter 17 ein Stoppsignal, das den Anlegerantrieb unterbricht, so dass die signalisierte Fehlablage von einer Bedienungsperson behoben werden kann.If the gripper 8 detects a single sheet 10, its swivel position corresponds to a target value which corresponds to a correct sheet placement. However, if the gripper 8 misses the swung-out arch fold in the first swivel position or if the suction device 3 swivels two arch folds simultaneously into the effective range of the gripper drum 5, its swivel position is different from the target value. This changes the immersion depth of the iron core 9 and the inductance of the resonant circuit 11. Such a deviation from the target value is signaled and generated by the coil 13 of the coil 14 a stop signal in the evaluator 17, which interrupts the feeder drive, so that the signaled incorrect filing can be remedied by an operator.

Nach einem nicht dargestellten Ausführungsbeispiel könnte die Spule 10 entfallen, wobei der Fühler 9 (anstatt des Weicheisenzapfens) ein plattenförmiges Medium ist, welches zwischen die Platten des Kondensators 12 greift und dessen Kapazität mit der Eintauchtiefe ändert.According to an embodiment not shown, the coil 10 could be omitted, the sensor 9 (instead of the soft iron pin) being a plate-shaped medium which engages between the plates of the capacitor 12 and whose capacitance changes with the immersion depth.

Die Elektronik 16 weist im Wesentlichen einen Verstärker 20 mit variabler Verstärkung, eine Amplitudenregelung 21 sowie eine Kompensationsspule 24 mit der Induktivität L1 auf, welche gleich der Induktivität L2 der Spule 14 ist. Hierbei ist die Impedanzdifferenz zwischen beiden Spulen 10, 24 proportional der Impedanz des LC-Schwingkreises 11. Die zum Auswerter 17 gehörende Aufbereitungselektronik 18 besteht aus einem Frequenzzähler und die Auswertelektronik 19 aus einem Comparator, vorzugsweise einem Mikroprozessor, der ein Signal auslöst, wenn das Zählergebnis von einem Sollwert oder Sollwertbereich abweicht.The electronics 16 essentially have an amplifier 20 with variable gain, an amplitude control 21 and a compensation coil 24 with the inductance L1, which is equal to the inductance L2 of the coil 14. The impedance difference between the two coils 10, 24 is proportional to the impedance of the LC resonant circuit 11. The processing electronics 18 belonging to the evaluator 17 consist of a frequency counter and the evaluation electronics 19 consist of a comparator, preferably a microprocessor, which triggers a signal when the counting result deviates from a setpoint or setpoint range.

Nach einem weiteren nicht dargestellten Ausführungsbeispiel kann vorgesehen sein, dass an der Greifertrommel 5 eine mit dem Greifer 8 verschiebbare, binär codierte Scheibe gelagert ist. Der ortsfeste, die Spule 14 ersetzende, Signalempfänger bestände aus wenigstens einem Lichtleiter mit einem optoelektronischen Wandler. Der Wandler würde dabei mit jedem Maschinentakt einmal aktiviert und zwar in dem Augenblick, in welchem die Ablesestellen der codierten Scheibe dem Ende des oder der Lichtleiter(s) gegenüber liegen. According to a further exemplary embodiment, not shown, it can be provided that a binary-coded disk which can be displaced with the gripper 8 is mounted on the gripper drum 5. The fixed signal receiver, which replaces the coil 14, would consist of at least one light guide with an optoelectronic converter. The converter would be activated once with each machine cycle, at the moment at which the reading points of the coded disk lie opposite the end of the light guide (s).

Claims (7)

1. Bogenanleger dessen Greifertrommel (5) während einer Umdrehung in einer ersten Drehlage mit mindestens einem Greifer (8) einen Bogen (2) im Anlegermagazin (1) ergreift und in einer zweiten Drehlage freigibt, wobei der Greifertrommel (5) eine Vorrichtung mit einem Auswerter (17) zugeordnet ist, welche zwischen den beiden Drehlagen eine Abweichung der Dicke des abgezogenen Druckbogens (2) von einem Sollwert detektiert und gegebenenfalls mit einem im Auswerter (17) erzeugten Signal den Antrieb stillsetzt, dadurch gekennzeichnet, dass ein mitrotierender Fühler (9) zwischen den beiden Drehlagen der Greifertrommel (5) die Lage des Greifers (8) detektiert und die Abweichungen vom Sollwert über einen ebenfalls mitrotierenden Signalgeber (13) als analoges oder digitales Signal einem neben der Greifertrommel ortsfest angeordneten, den Auswerter (17) steuernden Signalempfänger (14) signalisiert.1. Sheet feeder whose gripper drum (5) grips a sheet (2) in the feeder magazine (1) during a revolution in a first rotational position with at least one gripper (8) and releases it in a second rotational position, the gripper drum (5) providing a device with a An evaluator (17) is assigned, which detects a deviation in the thickness of the printed sheet (2) from a desired value between the two rotational positions and, if necessary, stops the drive with a signal generated in the evaluator (17), characterized in that a co-rotating sensor (9 ) between the two rotational positions of the gripper drum (5) detects the position of the gripper (8) and the deviations from the setpoint via a signal transmitter (13) which also rotates as an analog or digital signal to a signal receiver which is arranged in a fixed position next to the gripper drum and controls the evaluator (17) (14) signals. 2. Bogenanleger nach Anspruch 1, dadurch gekennzeichnet, dass die Signalübertragung vom Signalgeber (10-13) zum Signalempfänger (14) berührungsfrei erfolgt.2. Sheet feeder according to claim 1, characterized in that the signal transmission from the signal generator (10-13) to the signal receiver (14) takes place without contact. 3. Bogenanleger nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Signalgeber (10-13) der Schwingkreis (11) eines LC-Oszillators ist, und dass sich die Impedanz des Schwingkreises in Abhängigkeit von der Stellung des Greiferhebels (8) ändert.3. Sheet feeder according to claim 1 or 2, characterized in that the signal transmitter (10-13) is the resonant circuit (11) of an LC oscillator, and that the impedance of the resonant circuit changes as a function of the position of the gripper lever (8). 4. Bogenanleger nach Anspruch 3, dadurch gekennzeichnet, dass der Schwingkreis (11) eine Spule (10) mit einem den Fühler bildenden, in die Spule eintauchbaren, weichmagnetischen Topf (9) aufweist, dessen Eintauchtiefe sich mit der Lage des Greiferhebels (8) ändert.4. Sheet feeder according to claim 3, characterized in that the resonant circuit (11) has a coil (10) with a sensor-forming, immersed in the coil, soft magnetic pot (9), the immersion depth with the position of the gripper lever (8) changes. 5. Bogenanleger nach Anspruch 4, dadurch gekennzeichnet, dass der Schwingkreis (11) nahe der Greifertrommelperipherie eine Wicklung (13) aufweist, welche mit einer ortsfesten, als Signalempfänger wirkenden Spule (14) einen linearen Übertrager bildet.5. Sheet feeder according to claim 4, characterized in that the resonant circuit (11) near the gripper drum periphery has a winding (13) which forms a linear transformer with a stationary coil acting as a signal receiver (14). 6. Bogenanleger nach Anspruch 5, dadurch gekennzeichnet, dass nebst der Spule (14) mindestens eine weitere, den Schwingkreis (11) anregende, ortsfeste Spule vorgesehen ist.6. Sheet feeder according to claim 5, characterized in that in addition to the coil (14) at least one further, the resonant circuit (11) stimulating, fixed coil is provided. 7. Bogenanleger nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an der Greifertrommel eine mit dem Greifer verschiebbare binär codierte Scheibe gelagert ist, und dass der aus wenigstens einem Lichtleiter gebildete, ortsfeste Signalempfänger mit einem optoelektronischen Wandler verbunden ist.7. Sheet feeder according to claim 1 or 2, characterized in that a displaceable with the gripper binary coded disk is mounted on the gripper drum, and that the stationary signal receiver formed from at least one light guide is connected to an optoelectronic converter.
EP87111137A 1986-09-24 1987-08-01 Sheet feeder and layer Expired EP0261354B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87111137T ATE48823T1 (en) 1986-09-24 1987-08-01 SHEET FEEDER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3830/86A CH671754A5 (en) 1986-09-24 1986-09-24
CH3830/86 1986-09-24

Publications (2)

Publication Number Publication Date
EP0261354A1 true EP0261354A1 (en) 1988-03-30
EP0261354B1 EP0261354B1 (en) 1989-12-20

Family

ID=4264381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111137A Expired EP0261354B1 (en) 1986-09-24 1987-08-01 Sheet feeder and layer

Country Status (6)

Country Link
US (1) US4836528A (en)
EP (1) EP0261354B1 (en)
JP (1) JP2513714B2 (en)
AT (1) ATE48823T1 (en)
CH (1) CH671754A5 (en)
DE (1) DE3761203D1 (en)

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DE3936563A1 (en) * 1989-11-03 1991-05-08 Kolbus Gmbh & Co Kg Monitoring arrangement for printer paper - detects missing, detective or multiple sheets from tilt angle of clamping gripper at defined gripping drum positions
GB2203413B (en) * 1987-04-10 1991-08-14 Bobst Sa Device for introducing sheets into a machine processing them
EP1883536A2 (en) * 2005-05-25 2008-02-06 Goss International Americas, Inc. Paper thickness measuring device for a rotary paper feeding device
DE102009004688A1 (en) * 2009-01-12 2010-07-22 Beb Industrie-Elektronik Ag Apparatus for detecting a thickness or thickness variation of a flat article
US8472025B2 (en) 2009-01-15 2013-06-25 Beb Industrie-Elektronik Ag Device and method for detecting reflected and/or emitted light of an object

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US5833229A (en) * 1996-07-29 1998-11-10 Prim Hall Enterprises, Inc. Bindery feeder and method of operation
US5901955A (en) * 1996-09-25 1999-05-11 Heidelberg Finishing Systems, Inc. Gripper seat
US7387236B2 (en) * 2001-10-09 2008-06-17 Delaware Capital Formation, Inc. Dispensing of currency
US20050098622A1 (en) * 2001-10-09 2005-05-12 Gregory Jantsch Dispensing of currency
EP1637486B1 (en) * 2004-09-20 2007-11-14 Müller Martini Holding AG Method and device for measuring the thickness of specifically spaced printed products passing a measuring device in a transport stream
US20070001383A1 (en) * 2005-06-20 2007-01-04 Gregory Jantsch Dispensing of currency
CN104355171A (en) * 2014-10-21 2015-02-18 平湖英厚机械有限公司 Automatic section thickness detection device of high-speed roller collating machine

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203413B (en) * 1987-04-10 1991-08-14 Bobst Sa Device for introducing sheets into a machine processing them
EP0414623A1 (en) * 1989-08-25 1991-02-27 Lexmark International, Inc. Apparatus for controlling interpage gaps in printers and method of interpage gap control
DE3936563A1 (en) * 1989-11-03 1991-05-08 Kolbus Gmbh & Co Kg Monitoring arrangement for printer paper - detects missing, detective or multiple sheets from tilt angle of clamping gripper at defined gripping drum positions
EP1883536A2 (en) * 2005-05-25 2008-02-06 Goss International Americas, Inc. Paper thickness measuring device for a rotary paper feeding device
EP1883536A4 (en) * 2005-05-25 2011-04-06 Goss Int Americas Inc Paper thickness measuring device for a rotary paper feeding device
DE102009004688A1 (en) * 2009-01-12 2010-07-22 Beb Industrie-Elektronik Ag Apparatus for detecting a thickness or thickness variation of a flat article
US8610441B2 (en) 2009-01-12 2013-12-17 Beb Industrie-Elektronik Ag Device for determining a thickness or thickness variation of a flat object
US8472025B2 (en) 2009-01-15 2013-06-25 Beb Industrie-Elektronik Ag Device and method for detecting reflected and/or emitted light of an object

Also Published As

Publication number Publication date
US4836528A (en) 1989-06-06
DE3761203D1 (en) 1990-01-25
EP0261354B1 (en) 1989-12-20
ATE48823T1 (en) 1990-01-15
JP2513714B2 (en) 1996-07-03
CH671754A5 (en) 1989-09-29
JPS6387456A (en) 1988-04-18

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