EP0261354A1 - Sheet feeder and layer - Google Patents
Sheet feeder and layer Download PDFInfo
- 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
- Authority
- 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
Links
Images
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
- 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)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Sheets, Magazines, And Separation Thereof (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
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
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.
- 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
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-
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
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
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
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
Claims (7)
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) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2729751A1 (en) * | 1995-01-20 | 1996-07-26 | Perto Sa | DEVICE AND NUMERICAL MEASUREMENT OF SHEET THICKNESS |
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 |
DE502004005511D1 (en) | 2004-09-20 | 2007-12-27 | Mueller Martini Holding Ag | Method and device for measuring the thickness of printed products passing through a measuring device at specific intervals in a flow rate |
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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2030941A1 (en) * | 1969-06-25 | 1971-04-22 | J W Clement Co , Depew, N Y (V St A) | Scanning device |
US3993303A (en) * | 1973-11-19 | 1976-11-23 | Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen | Method and apparatus for controlled feeding of sheets to printing machines or the like |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH408065A (en) * | 1961-10-03 | 1966-02-28 | Mueller Hans | Depositing machine for depositing sheets of paper on a transport device |
US3521880A (en) * | 1968-12-30 | 1970-07-28 | Honeywell Inc | Processing station with document handling and aligning means |
CH586611A5 (en) * | 1975-11-14 | 1977-04-15 | Grapha Holding Ag | |
US4078784A (en) * | 1976-10-07 | 1978-03-14 | Harris Corporation | Signature opening apparatus |
US4127266A (en) * | 1977-03-02 | 1978-11-28 | R. R. Donnelley & Sons Company | Proximity caliper |
CH641112A5 (en) * | 1979-10-17 | 1984-02-15 | Grapha Holding Ag | FEEDER FOR PRINTED SHEET. |
WO1982001698A1 (en) * | 1980-11-07 | 1982-05-27 | Tee Victor G | Apparatus for detecting the thickness of sheets |
DE3201407A1 (en) * | 1981-03-19 | 1982-10-07 | VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig | MONITORING DEVICE FOR MONITORING BOOK BLOCK FOR MATCHING MACHINES |
DE3217815C2 (en) * | 1982-05-12 | 1985-07-18 | Johannes Menschner Maschinenfabrik Gmbh & Co Kg, 4060 Viersen | Scanning device for determining web seams |
-
1986
- 1986-09-24 CH CH3830/86A patent/CH671754A5/de not_active IP Right Cessation
-
1987
- 1987-08-01 DE DE8787111137T patent/DE3761203D1/en not_active Expired - Fee Related
- 1987-08-01 AT AT87111137T patent/ATE48823T1/en not_active IP Right Cessation
- 1987-08-01 EP EP87111137A patent/EP0261354B1/en not_active Expired
- 1987-08-24 JP JP62208394A patent/JP2513714B2/en not_active Expired - Fee Related
- 1987-09-23 US US07/100,088 patent/US4836528A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2030941A1 (en) * | 1969-06-25 | 1971-04-22 | J W Clement Co , Depew, N Y (V St A) | Scanning device |
US3993303A (en) * | 1973-11-19 | 1976-11-23 | Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen | Method and apparatus for controlled feeding of sheets to printing machines or the like |
Cited By (8)
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 |
---|---|
ATE48823T1 (en) | 1990-01-15 |
EP0261354B1 (en) | 1989-12-20 |
JP2513714B2 (en) | 1996-07-03 |
DE3761203D1 (en) | 1990-01-25 |
US4836528A (en) | 1989-06-06 |
JPS6387456A (en) | 1988-04-18 |
CH671754A5 (en) | 1989-09-29 |
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